A.D.Stuart Associates - Fundamentals of Engineering Refreshers (Web-based)

These refreshers are intended for engineers who want to renew their basic undergraduate math and engineering skills in a convenient self-paced manner. Fundamentals concepts are presented as web-based mini-movies that can be viewed at any time. In addition, relevant readings and example problems are assigned from a Fundamentals of Engineering Review Manual. Weekly internet-based discussions and problem Q&A sessions are conducted. Email correspondence between individual students and the instructor is encouraged.

Each of the following engineering refresher topics takes about five weeks to complete. Participants can enroll in one or more refresher.

Refresher — Engineering Mathematics (view a demo of this course)

Ten to twelve weekly topics :

Math-1 — Introduction
Math-2 — Units
Math-3 — Conic Sections
Math-4 — Trigonometry
Math-5 — Linear Equations
Math-6 — Roots of Equations
Math-7 — Matricies
Math-8 — Logarithms
Math-9 — Vectors
Math-10 — Complex Numbers
Math-11 — Differential Calculus
Math-12 — Derivatives: Special
Math-13 — Integral Calculus
Math-14 — Definite Integrals
Math-15 — Differential Equations
Math-16 — Engineering and Scientific Notation

Refresher — Engineering Mechanics (view a demo of this course)

Ten to twelve weekly topics:

EMech 1 — Overview and Basic Rules of Mechanics
EMech 2 — Force Systems
EMech 3 — Systems in Equilibrium
EMech 4 — Forces in Trusses and Frames
EMech 5 — Pulley Systems
EMech 6 — Friction Events
EMech 7 — Centroid and Moments of Inertia
EMech 8 — Kinematics and Kinetics
EMech 9 — Conservation of Energy and Work
EMech 10 — Conservation of Impulse and Momentum
EMech 11 — Introduction to simple vibrations

Learning Options:

Web-based self-paced lessons including on-line mentoring
On-line mentoring session with the instructor.

Course Materials:

Participant receives one copy of the text Fundamentals of Engineering Review Manual by Michael R. Lindeburg, which contains brief review topics and many worked-out examples.

< Back

To register for a class, or if you have any questions about our offerings, please contact Alan Stuart, Ph.D.

If the above email link is not working, please try our
contact form.

Joomla! Debug Console

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Profile Information

Time

Memory

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Time: 46.61 ms / 57.25 ms Memory: 3.641 MB / 5.71 MB Application: afterInitialise

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Time: 1.28 ms / 82.07 ms Memory: 0.053 MB / 7.38 MB Application: After Access::preloadComponents (all components)

Time: 0.02 ms / 82.09 ms Memory: 0.000 MB / 7.37 MB Application: Before Access::preloadPermissions (com_content)

Time: 0.57 ms / 82.66 ms Memory: 0.025 MB / 7.40 MB Application: After Access::preloadPermissions (com_content)

Time: 0.02 ms / 82.68 ms Memory: 0.000 MB / 7.40 MB Application: Before Access::getAssetRules (id:86 name:com_content.article.9)

Time: 0.41 ms / 83.09 ms Memory: 0.027 MB / 7.42 MB Application: After Access::getAssetRules (id:86 name:com_content.article.9)

Time: 27.24 ms / 110.33 ms Memory: 2.020 MB / 9.44 MB Application: afterRenderComponent com_content

Time: 1.04 ms / 111.37 ms Memory: 0.098 MB / 9.54 MB Application: afterDispatch

Time: 3.16 ms / 114.53 ms Memory: 0.153 MB / 9.70 MB Application: beforeRenderModule mod_custom (Contact us)

Time: 0.47 ms / 115.00 ms Memory: 0.030 MB / 9.73 MB Application: afterRenderModule mod_custom (Contact us)

Time: 0.05 ms / 115.05 ms Memory: 0.000 MB / 9.73 MB Application: beforeRenderModule mod_custom (Welcome)

Time: 1.01 ms / 116.07 ms Memory: 0.034 MB / 9.76 MB Application: afterRenderModule mod_custom (Welcome)

Time: 0.06 ms / 116.12 ms Memory: 0.001 MB / 9.76 MB Application: beforeRenderModule mod_menu (Main Menu)

Time: 1.58 ms / 117.70 ms Memory: 0.082 MB / 9.84 MB Application: afterRenderModule mod_menu (Main Menu)

Time: 2.75 ms / 120.45 ms Memory: 0.109 MB / 9.95 MB Application: afterRender

Database queries total: 27.92 ms

Memory Usage

Database Queries

25 Queries Logged 27.92 ms

Query Time: 0.56 ms Query memory: 0.025 MB Memory before query: 3.757 MB Rows returned: 0

SELECT `data`

  FROM `jcfv_session`

  WHERE `session_id` = 'bde6c39fb5068fc28a3c6c9434cc68c1'

Explain

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	jcfv_session	NULL	const	PRIMARY	PRIMARY	194	const	1	100.00	NULL

Profile

Status	Duration
starting	0.06 ms
checking permissions	0.01 ms
Opening tables	0.23 ms
init	0.02 ms
System lock	0.01 ms
optimizing	0.01 ms
statistics	0.04 ms
executing	0.01 ms
end	0.00 ms
query end	0.01 ms
closing tables	0.01 ms
freeing items	0.03 ms
cleaning up	0.01 ms

Call Stack

#	Caller	File and line number
16	JDatabaseDriverMysqli->execute()	JROOT/libraries/joomla/database/driver.php:1734
15	JDatabaseDriver->loadResult()	JROOT/libraries/joomla/session/storage/database.php:45
14	JSessionStorageDatabase->read()	Same as call in the line below.
13	session_start()	JROOT/libraries/joomla/session/handler/native.php:260
12	JSessionHandlerNative->doSessionStart()	JROOT/libraries/joomla/session/handler/native.php:50
11	JSessionHandlerNative->start()	JROOT/libraries/joomla/session/handler/joomla.php:88
10	JSessionHandlerJoomla->start()	JROOT/libraries/src/Session/Session.php:660
9	Joomla\CMS\Session\Session->_start()	JROOT/libraries/src/Session/Session.php:620
8	Joomla\CMS\Session\Session->start()	JROOT/libraries/src/Session/Session.php:498
7	Joomla\CMS\Session\Session->get()	JROOT/libraries/src/Session/Session.php:455
6	Joomla\CMS\Session\Session->isNew()	JROOT/libraries/src/Application/CMSApplication.php:758
5	Joomla\CMS\Application\CMSApplication->loadSession()	JROOT/libraries/src/Application/CMSApplication.php:135
4	Joomla\CMS\Application\CMSApplication->__construct()	JROOT/libraries/src/Application/SiteApplication.php:66
3	Joomla\CMS\Application\SiteApplication->__construct()	JROOT/libraries/src/Application/CMSApplication.php:344
2	Joomla\CMS\Application\CMSApplication::getInstance()	JROOT/libraries/src/Factory.php:140
1	Joomla\CMS\Factory::getApplication()	JROOT/index.php:46

[Add xdebug.file_link_format directive to your php.ini file to have links for files.]

Query Time: 0.25 ms After last query: 1.30 ms Query memory: 0.022 MB Memory before query: 3.860 MB Rows returned: 0

SELECT `session_id`

  FROM `jcfv_session`

  WHERE `session_id` = 'bde6c39fb5068fc28a3c6c9434cc68c1' 
  LIMIT 1

Explain

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	jcfv_session	NULL	const	PRIMARY	PRIMARY	194	const	1	100.00	Using index

Profile

Status	Duration
starting	0.03 ms
checking permissions	0.00 ms
Opening tables	0.01 ms
init	0.01 ms
System lock	0.01 ms
optimizing	0.01 ms
statistics	0.02 ms
executing	0.01 ms
end	0.00 ms
query end	0.01 ms
closing tables	0.01 ms
freeing items	0.02 ms
cleaning up	0.01 ms

Call Stack

#	Caller	File and line number
9	JDatabaseDriverMysqli->execute()	JROOT/libraries/joomla/database/driver.php:1734
8	JDatabaseDriver->loadResult()	JROOT/libraries/src/Session/MetadataManager.php:74
7	Joomla\CMS\Session\MetadataManager->createRecordIfNonExisting()	JROOT/libraries/src/Application/CMSApplication.php:153
6	Joomla\CMS\Application\CMSApplication->checkSession()	JROOT/libraries/src/Application/CMSApplication.php:760
5	Joomla\CMS\Application\CMSApplication->loadSession()	JROOT/libraries/src/Application/CMSApplication.php:135
4	Joomla\CMS\Application\CMSApplication->__construct()	JROOT/libraries/src/Application/SiteApplication.php:66
3	Joomla\CMS\Application\SiteApplication->__construct()	JROOT/libraries/src/Application/CMSApplication.php:344
2	Joomla\CMS\Application\CMSApplication::getInstance()	JROOT/libraries/src/Factory.php:140
1	Joomla\CMS\Factory::getApplication()	JROOT/index.php:46

[Add xdebug.file_link_format directive to your php.ini file to have links for files.]

Query Time: 1.87 ms After last query: 0.07 ms Query memory: 0.004 MB Memory before query: 3.866 MB

INSERT INTO `jcfv_session`
(`session_id`,`guest`,`time`,`userid`,`username`,`client_id`) 
  VALUES 
('bde6c39fb5068fc28a3c6c9434cc68c1', 1, 1713591852, 0, '', 0)

Explain

EXPLAIN not possible on query: INSERT INTO `jcfv_session` (`session_id`,`guest`,`time`,`userid`,`username`,`client_id`) VALUES ('bde6c39fb5068fc28a3c6c9434cc68c1', 1, 1713591852, 0, '', 0)

Profile

Status	Duration
starting	0.03 ms
checking permissions	0.00 ms
Opening tables	0.01 ms
init	0.01 ms
System lock	0.00 ms
update	0.09 ms
end	0.00 ms
query end	1.60 ms
closing tables	0.02 ms
freeing items	0.02 ms
cleaning up	0.01 ms

Call Stack

#	Caller	File and line number
8	JDatabaseDriverMysqli->execute()	JROOT/libraries/src/Session/MetadataManager.php:116
7	Joomla\CMS\Session\MetadataManager->createRecordIfNonExisting()	JROOT/libraries/src/Application/CMSApplication.php:153
6	Joomla\CMS\Application\CMSApplication->checkSession()	JROOT/libraries/src/Application/CMSApplication.php:760
5	Joomla\CMS\Application\CMSApplication->loadSession()	JROOT/libraries/src/Application/CMSApplication.php:135
4	Joomla\CMS\Application\CMSApplication->__construct()	JROOT/libraries/src/Application/SiteApplication.php:66
3	Joomla\CMS\Application\SiteApplication->__construct()	JROOT/libraries/src/Application/CMSApplication.php:344
2	Joomla\CMS\Application\CMSApplication::getInstance()	JROOT/libraries/src/Factory.php:140
1	Joomla\CMS\Factory::getApplication()	JROOT/index.php:46

[Add xdebug.file_link_format directive to your php.ini file to have links for files.]

Query Time: 0.75 ms After last query: 2.14 ms Query memory: 0.030 MB Memory before query: 4.140 MB Rows returned: 37

SELECT `extension_id` AS `id`,`element` AS `option`,`params`,`enabled`

  FROM `jcfv_extensions`

  WHERE `type` = 'component' 
  AND `state` = 0 
  AND `enabled` = 1

Explain

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	jcfv_extensions	NULL	ref	extension	extension	82	const	37	1.00	Using where

Profile

Status	Duration
starting	0.03 ms
checking permissions	0.01 ms
Opening tables	0.20 ms
init	0.02 ms
System lock	0.01 ms
optimizing	0.02 ms
statistics	0.05 ms
preparing	0.01 ms
executing	0.00 ms
Sending data	0.18 ms
end	0.00 ms
query end	0.01 ms
closing tables	0.01 ms
freeing items	0.03 ms
cleaning up	0.01 ms

Call Stack

#	Caller	File and line number
12	JDatabaseDriverMysqli->execute()	JROOT/libraries/joomla/database/driver.php:1695
11	JDatabaseDriver->loadObjectList()	JROOT/libraries/src/Component/ComponentHelper.php:445
10	Joomla\CMS\Component\ComponentHelper::Joomla\CMS\Component\{closure}()	Same as call in the line below.
9	call_user_func_array()	JROOT/libraries/src/Cache/Controller/CallbackController.php:173
8	Joomla\CMS\Cache\Controller\CallbackController->get()	JROOT/libraries/src/Component/ComponentHelper.php:453
7	Joomla\CMS\Component\ComponentHelper::load()	JROOT/libraries/src/Component/ComponentHelper.php:519
6	Joomla\CMS\Component\ComponentHelper::getComponents()	JROOT/libraries/src/Component/ComponentHelper.php:44
5	Joomla\CMS\Component\ComponentHelper::getComponent()	JROOT/libraries/src/Component/ComponentHelper.php:103
4	Joomla\CMS\Component\ComponentHelper::getParams()	JROOT/libraries/src/Application/SiteApplication.php:594
3	Joomla\CMS\Application\SiteApplication->initialiseApp()	JROOT/libraries/src/Application/SiteApplication.php:212
2	Joomla\CMS\Application\SiteApplication->doExecute()	JROOT/libraries/src/Application/CMSApplication.php:196
1	Joomla\CMS\Application\CMSApplication->execute()	JROOT/index.php:49

[Add xdebug.file_link_format directive to your php.ini file to have links for files.]

Query Time: 0.51 ms After last query: 1.89 ms Query memory: 0.023 MB Memory before query: 4.335 MB Rows returned: 5

SELECT id, rules

  FROM `jcfv_viewlevels`

Explain

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	jcfv_viewlevels	NULL	ALL	NULL	NO INDEX KEY COULD BE USED	NULL	NULL	5	100.00	NULL

Profile

Status	Duration
starting	0.03 ms
checking permissions	0.01 ms
Opening tables	0.23 ms
init	0.01 ms
System lock	0.01 ms
optimizing	0.01 ms
statistics	0.01 ms
preparing	0.01 ms
executing	0.00 ms
Sending data	0.05 ms
end	0.00 ms
query end	0.01 ms
closing tables	0.01 ms
freeing items	0.03 ms
cleaning up	0.01 ms

Call Stack

#	Caller	File and line number
10	JDatabaseDriverMysqli->execute()	JROOT/libraries/joomla/database/driver.php:1500
9	JDatabaseDriver->loadAssocList()	JROOT/libraries/src/Access/Access.php:1063
8	Joomla\CMS\Access\Access::getAuthorisedViewLevels()	JROOT/libraries/src/User/User.php:458
7	Joomla\CMS\User\User->getAuthorisedViewLevels()	JROOT/libraries/src/Plugin/PluginHelper.php:321
6	Joomla\CMS\Plugin\PluginHelper::load()	JROOT/libraries/src/Plugin/PluginHelper.php:87
5	Joomla\CMS\Plugin\PluginHelper::getPlugin()	JROOT/libraries/src/Plugin/PluginHelper.php:129
4	Joomla\CMS\Plugin\PluginHelper::isEnabled()	JROOT/libraries/src/Application/SiteApplication.php:604
3	Joomla\CMS\Application\SiteApplication->initialiseApp()	JROOT/libraries/src/Application/SiteApplication.php:212
2	Joomla\CMS\Application\SiteApplication->doExecute()	JROOT/libraries/src/Application/CMSApplication.php:196
1	Joomla\CMS\Application\CMSApplication->execute()	JROOT/index.php:49

[Add xdebug.file_link_format directive to your php.ini file to have links for files.]

Query Time: 0.46 ms After last query: 0.06 ms Query memory: 0.022 MB Memory before query: 4.347 MB Rows returned: 2

SELECT b.id

  FROM jcfv_usergroups AS a

  LEFT JOIN jcfv_usergroups AS b 
  ON b.lft <= a.lft 
  AND b.rgt >= a.rgt

  WHERE a.id = 9

Explain

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	a	NULL	const	PRIMARY	PRIMARY	4	const	1	100.00	NULL
1	SIMPLE	b	NULL	range	idx_usergroup_nested_set_lookup	idx_usergroup_nested_set_lookup	4	NULL	2	100.00	Using where; Using index

Profile

Status	Duration
starting	0.04 ms
checking permissions	0.00 ms
checking permissions	0.00 ms
Opening tables	0.17 ms
init	0.02 ms
System lock	0.01 ms
optimizing	0.01 ms
statistics	0.06 ms
preparing	0.01 ms
executing	0.00 ms
Sending data	0.02 ms
end	0.00 ms
query end	0.01 ms
closing tables	0.01 ms
freeing items	0.03 ms
cleaning up	0.01 ms

Call Stack

#	Caller	File and line number
11	JDatabaseDriverMysqli->execute()	JROOT/libraries/joomla/database/driver.php:1544
10	JDatabaseDriver->loadColumn()	JROOT/libraries/src/Access/Access.php:980
9	Joomla\CMS\Access\Access::getGroupsByUser()	JROOT/libraries/src/Access/Access.php:1095
8	Joomla\CMS\Access\Access::getAuthorisedViewLevels()	JROOT/libraries/src/User/User.php:458
7	Joomla\CMS\User\User->getAuthorisedViewLevels()	JROOT/libraries/src/Plugin/PluginHelper.php:321
6	Joomla\CMS\Plugin\PluginHelper::load()	JROOT/libraries/src/Plugin/PluginHelper.php:87
5	Joomla\CMS\Plugin\PluginHelper::getPlugin()	JROOT/libraries/src/Plugin/PluginHelper.php:129
4	Joomla\CMS\Plugin\PluginHelper::isEnabled()	JROOT/libraries/src/Application/SiteApplication.php:604
3	Joomla\CMS\Application\SiteApplication->initialiseApp()	JROOT/libraries/src/Application/SiteApplication.php:212
2	Joomla\CMS\Application\SiteApplication->doExecute()	JROOT/libraries/src/Application/CMSApplication.php:196
1	Joomla\CMS\Application\CMSApplication->execute()	JROOT/index.php:49

[Add xdebug.file_link_format directive to your php.ini file to have links for files.]

Query Time: 0.82 ms After last query: 0.56 ms Query memory: 0.039 MB Memory before query: 4.414 MB Rows returned: 85

SELECT `folder` AS `type`,`element` AS `name`,`params` AS `params`,`extension_id` AS `id`

  FROM jcfv_extensions

  WHERE enabled = 1 
  AND type = 'plugin' 
  AND state IN (0,1) 
  AND access IN (1,1,5)

  ORDER BY ordering

Explain

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	jcfv_extensions	NULL	ref	extension	extension	82	const	102	0.60	Using index condition; Using where; Using filesort

Profile

Status	Duration
starting	0.04 ms
checking permissions	0.01 ms
Opening tables	0.01 ms
init	0.02 ms
System lock	0.01 ms
optimizing	0.01 ms
statistics	0.03 ms
preparing	0.01 ms
Sorting result	0.01 ms
executing	0.00 ms
Sending data	0.01 ms
Creating sort index	0.49 ms
end	0.01 ms
query end	0.01 ms
closing tables	0.01 ms
freeing items	0.03 ms
cleaning up	0.01 ms

Call Stack

#	Caller	File and line number
11	JDatabaseDriverMysqli->execute()	JROOT/libraries/joomla/database/driver.php:1695
10	JDatabaseDriver->loadObjectList()	JROOT/libraries/src/Plugin/PluginHelper.php:354
9	Joomla\CMS\Plugin\PluginHelper::Joomla\CMS\Plugin\{closure}()	Same as call in the line below.
8	call_user_func_array()	JROOT/libraries/src/Cache/Controller/CallbackController.php:173
7	Joomla\CMS\Cache\Controller\CallbackController->get()	JROOT/libraries/src/Plugin/PluginHelper.php:359
6	Joomla\CMS\Plugin\PluginHelper::load()	JROOT/libraries/src/Plugin/PluginHelper.php:87
5	Joomla\CMS\Plugin\PluginHelper::getPlugin()	JROOT/libraries/src/Plugin/PluginHelper.php:129
4	Joomla\CMS\Plugin\PluginHelper::isEnabled()	JROOT/libraries/src/Application/SiteApplication.php:604
3	Joomla\CMS\Application\SiteApplication->initialiseApp()	JROOT/libraries/src/Application/SiteApplication.php:212
2	Joomla\CMS\Application\SiteApplication->doExecute()	JROOT/libraries/src/Application/CMSApplication.php:196
1	Joomla\CMS\Application\CMSApplication->execute()	JROOT/index.php:49

[Add xdebug.file_link_format directive to your php.ini file to have links for files.]

Query Time: 1.59 ms After last query: 13.88 ms Query memory: 0.034 MB Memory before query: 6.167 MB Rows returned: 9

SELECT m.id, m.menutype, m.title, m.alias, m.note, m.path AS route, m.link, m.type, m.level, m.language,`m`.`browserNav`, m.access, m.params, m.home, m.img, m.template_style_id, m.component_id, m.parent_id,e.element as component

  FROM jcfv_menu AS m

  LEFT JOIN jcfv_extensions AS e 
  ON m.component_id = e.extension_id

  WHERE m.published = 1 
  AND m.parent_id > 0 
  AND m.client_id = 0

  ORDER BY m.lft

Explain

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	m	NULL	ref	idx_client_id_parent_id_alias_language	idx_client_id_parent_id_alias_language	1	const	21	3.33	Using index condition; Using where; Using filesort
1	SIMPLE	e	NULL	eq_ref	PRIMARY	PRIMARY	4	db768633771.m.component_id	1	100.00	Using where

Profile

Status	Duration
starting	0.08 ms
checking permissions	0.01 ms
checking permissions	0.00 ms
Opening tables	0.80 ms
init	0.04 ms
System lock	0.01 ms
optimizing	0.01 ms
statistics	0.06 ms
preparing	0.02 ms
Sorting result	0.01 ms
executing	0.00 ms
Sending data	0.01 ms
Creating sort index	0.22 ms
end	0.01 ms
query end	0.01 ms
closing tables	0.01 ms
freeing items	0.04 ms
cleaning up	0.01 ms

Call Stack

#	Caller	File and line number
19	JDatabaseDriverMysqli->execute()	JROOT/libraries/joomla/database/driver.php:1695
18	JDatabaseDriver->loadObjectList()	JROOT/libraries/src/Menu/SiteMenu.php:93
17	Joomla\CMS\Menu\SiteMenu->Joomla\CMS\Menu\{closure}()	Same as call in the line below.
16	call_user_func_array()	JROOT/libraries/src/Cache/Controller/CallbackController.php:173
15	Joomla\CMS\Cache\Controller\CallbackController->get()	JROOT/libraries/src/Menu/SiteMenu.php:101
14	Joomla\CMS\Menu\SiteMenu->load()	JROOT/libraries/src/Menu/AbstractMenu.php:76
13	Joomla\CMS\Menu\AbstractMenu->__construct()	JROOT/libraries/src/Menu/SiteMenu.php:62
12	Joomla\CMS\Menu\SiteMenu->__construct()	JROOT/libraries/src/Menu/AbstractMenu.php:131
11	Joomla\CMS\Menu\AbstractMenu::getInstance()	JROOT/libraries/src/Application/CMSApplication.php:375
10	Joomla\CMS\Application\CMSApplication->getMenu()	JROOT/libraries/src/Application/SiteApplication.php:275
9	Joomla\CMS\Application\SiteApplication->getMenu()	JROOT/libraries/src/Router/SiteRouter.php:64
8	Joomla\CMS\Router\SiteRouter->__construct()	JROOT/libraries/src/Router/Router.php:189
7	Joomla\CMS\Router\Router::getInstance()	JROOT/libraries/src/Application/CMSApplication.php:491
6	Joomla\CMS\Application\CMSApplication::getRouter()	JROOT/libraries/src/Application/SiteApplication.php:403
5	Joomla\CMS\Application\SiteApplication::getRouter()	JROOT/libraries/src/Application/CMSApplication.php:1073
4	Joomla\CMS\Application\CMSApplication->route()	JROOT/libraries/src/Application/SiteApplication.php:796
3	Joomla\CMS\Application\SiteApplication->route()	JROOT/libraries/src/Application/SiteApplication.php:218
2	Joomla\CMS\Application\SiteApplication->doExecute()	JROOT/libraries/src/Application/CMSApplication.php:196
1	Joomla\CMS\Application\CMSApplication->execute()	JROOT/index.php:49

[Add xdebug.file_link_format directive to your php.ini file to have links for files.]

Query Time: 0.35 ms After last query: 5.62 ms Query memory: 0.025 MB Memory before query: 6.749 MB Rows returned: 1

SELECT `extension_id` AS `id`,`element` AS `option`,`params`,`enabled`

  FROM `jcfv_extensions`

  WHERE `type` = 'library' 
  AND `element` = 'joomla'

Explain

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	jcfv_extensions	NULL	ref	element_clientid,element_folder_clientid,extension	extension	484	const,const	1	100.00	NULL

Profile

Status	Duration
starting	0.04 ms
checking permissions	0.01 ms
Opening tables	0.01 ms
init	0.02 ms
System lock	0.01 ms
optimizing	0.01 ms
statistics	0.06 ms
preparing	0.01 ms
executing	0.01 ms
Sending data	0.03 ms
end	0.00 ms
query end	0.01 ms
closing tables	0.01 ms
freeing items	0.03 ms
cleaning up	0.01 ms

Call Stack

#	Caller	File and line number
15	JDatabaseDriverMysqli->execute()	JROOT/libraries/joomla/database/driver.php:1656
14	JDatabaseDriver->loadObject()	JROOT/libraries/src/Helper/LibraryHelper.php:167
13	Joomla\CMS\Helper\LibraryHelper::Joomla\CMS\Helper\{closure}()	Same as call in the line below.
12	call_user_func_array()	JROOT/libraries/src/Cache/Controller/CallbackController.php:173
11	Joomla\CMS\Cache\Controller\CallbackController->get()	JROOT/libraries/src/Helper/LibraryHelper.php:175
10	Joomla\CMS\Helper\LibraryHelper::loadLibrary()	JROOT/libraries/src/Helper/LibraryHelper.php:43
9	Joomla\CMS\Helper\LibraryHelper::getLibrary()	JROOT/libraries/src/Helper/LibraryHelper.php:90
8	Joomla\CMS\Helper\LibraryHelper::getParams()	JROOT/libraries/src/Version.php:321
7	Joomla\CMS\Version->getMediaVersion()	JROOT/libraries/src/Factory.php:778
6	Joomla\CMS\Factory::createDocument()	JROOT/libraries/src/Factory.php:234
5	Joomla\CMS\Factory::getDocument()	JROOT/libraries/src/Application/WebApplication.php:1129
4	Joomla\CMS\Application\WebApplication->loadDocument()	JROOT/libraries/src/Application/SiteApplication.php:133
3	Joomla\CMS\Application\SiteApplication->dispatch()	JROOT/libraries/src/Application/SiteApplication.php:233
2	Joomla\CMS\Application\SiteApplication->doExecute()	JROOT/libraries/src/Application/CMSApplication.php:196
1	Joomla\CMS\Application\CMSApplication->execute()	JROOT/index.php:49

[Add xdebug.file_link_format directive to your php.ini file to have links for files.]

Query Time: 7.44 ms After last query: 0.13 ms Query memory: 0.005 MB Memory before query: 6.803 MB

UPDATE `jcfv_extensions`

  SET `params` = '{\"mediaversion\":\"2a930e84ce56663e793e3673cc7e1a97\"}'

  WHERE `type` = 'library' 
  AND `element` = 'joomla'

Explain

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	UPDATE	jcfv_extensions	NULL	range	element_clientid,element_folder_clientid,extension	extension	484	const,const	1	100.00	Using where

Profile

Status	Duration
starting	0.03 ms
checking permissions	0.00 ms
Opening tables	0.02 ms
init	0.02 ms
System lock	0.05 ms
updating	0.08 ms
end	0.01 ms
query end	7.09 ms
closing tables	0.02 ms
freeing items	0.02 ms
cleaning up	0.01 ms

Call Stack

#	Caller	File and line number
10	JDatabaseDriverMysqli->execute()	JROOT/libraries/src/Helper/LibraryHelper.php:117
9	Joomla\CMS\Helper\LibraryHelper::saveParams()	JROOT/libraries/src/Version.php:372
8	Joomla\CMS\Version->setMediaVersion()	JROOT/libraries/src/Version.php:331
7	Joomla\CMS\Version->getMediaVersion()	JROOT/libraries/src/Factory.php:778
6	Joomla\CMS\Factory::createDocument()	JROOT/libraries/src/Factory.php:234
5	Joomla\CMS\Factory::getDocument()	JROOT/libraries/src/Application/WebApplication.php:1129
4	Joomla\CMS\Application\WebApplication->loadDocument()	JROOT/libraries/src/Application/SiteApplication.php:133
3	Joomla\CMS\Application\SiteApplication->dispatch()	JROOT/libraries/src/Application/SiteApplication.php:233
2	Joomla\CMS\Application\SiteApplication->doExecute()	JROOT/libraries/src/Application/CMSApplication.php:196
1	Joomla\CMS\Application\CMSApplication->execute()	JROOT/index.php:49

[Add xdebug.file_link_format directive to your php.ini file to have links for files.]

Query Time: 0.53 ms After last query: 1.45 ms Query memory: 0.025 MB Memory before query: 6.984 MB Rows returned: 1

SELECT *

  FROM jcfv_languages

  WHERE published=1

  ORDER BY ordering ASC

Explain

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	jcfv_languages	NULL	ALL	NULL	NO INDEX KEY COULD BE USED	NULL	NULL	1	100.00	Using where; Using filesort

Profile

Status	Duration
starting	0.04 ms
checking permissions	0.01 ms
Opening tables	0.20 ms
init	0.02 ms
System lock	0.01 ms
optimizing	0.01 ms
statistics	0.01 ms
preparing	0.01 ms
Sorting result	0.00 ms
executing	0.00 ms
Sending data	0.01 ms
Creating sort index	0.06 ms
end	0.00 ms
query end	0.01 ms
closing tables	0.01 ms
freeing items	0.03 ms
cleaning up	0.01 ms

Call Stack

#	Caller	File and line number
7	JDatabaseDriverMysqli->execute()	JROOT/libraries/joomla/database/driver.php:1695
6	JDatabaseDriver->loadObjectList()	JROOT/libraries/src/Language/LanguageHelper.php:150
5	Joomla\CMS\Language\LanguageHelper::getLanguages()	JROOT/libraries/src/Application/SiteApplication.php:330
4	Joomla\CMS\Application\SiteApplication->getParams()	JROOT/libraries/src/Application/SiteApplication.php:138
3	Joomla\CMS\Application\SiteApplication->dispatch()	JROOT/libraries/src/Application/SiteApplication.php:233
2	Joomla\CMS\Application\SiteApplication->doExecute()	JROOT/libraries/src/Application/CMSApplication.php:196
1	Joomla\CMS\Application\CMSApplication->execute()	JROOT/index.php:49

[Add xdebug.file_link_format directive to your php.ini file to have links for files.]

Query Time: 0.64 ms After last query: 0.18 ms Query memory: 0.021 MB Memory before query: 6.998 MB Rows returned: 3

SELECT id, home, template, s.params

  FROM jcfv_template_styles as s

  LEFT JOIN jcfv_extensions as e 
  ON e.element=s.template 
  AND e.type='template' 
  AND e.client_id=s.client_id

  WHERE s.client_id = 0 
  AND e.enabled = 1

Explain

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	s	NULL	ALL	idx_template	NO INDEX KEY COULD BE USED	NULL	NULL	5	20.00	Using where
1	SIMPLE	e	NULL	ref	element_clientid,element_folder_clientid,extension	element_clientid	403	db768633771.s.template,const	1	4.41	Using index condition; Using where

Profile

Status	Duration
starting	0.04 ms
checking permissions	0.00 ms
checking permissions	0.00 ms
Opening tables	0.25 ms
init	0.02 ms
System lock	0.01 ms
optimizing	0.01 ms
statistics	0.05 ms
preparing	0.01 ms
executing	0.01 ms
Sending data	0.09 ms
end	0.00 ms
query end	0.01 ms
closing tables	0.01 ms
freeing items	0.03 ms
cleaning up	0.01 ms

Call Stack

#	Caller	File and line number
6	JDatabaseDriverMysqli->execute()	JROOT/libraries/joomla/database/driver.php:1695
5	JDatabaseDriver->loadObjectList()	JROOT/libraries/src/Application/SiteApplication.php:486
4	Joomla\CMS\Application\SiteApplication->getTemplate()	JROOT/libraries/src/Application/SiteApplication.php:168
3	Joomla\CMS\Application\SiteApplication->dispatch()	JROOT/libraries/src/Application/SiteApplication.php:233
2	Joomla\CMS\Application\SiteApplication->doExecute()	JROOT/libraries/src/Application/CMSApplication.php:196
1	Joomla\CMS\Application\CMSApplication->execute()	JROOT/index.php:49

[Add xdebug.file_link_format directive to your php.ini file to have links for files.]

Query Time: 1.11 ms After last query: 3.84 ms Query memory: 0.030 MB Memory before query: 7.327 MB Rows returned: 37

SELECT `id`,`name`,`rules`,`parent_id`

  FROM `jcfv_assets`

  WHERE `name` IN ('root.1','com_actionlogs','com_admin','com_aimysitemap','com_ajax','com_associations','com_banners','com_cache','com_categories','com_checkin','com_config','com_contact','com_content','com_contenthistory','com_cpanel','com_fields','com_finder','com_installer','com_jce','com_joomlaupdate','com_languages','com_linkchecker','com_login','com_mailto','com_media','com_menus','com_messages','com_modules','com_newsfeeds','com_plugins','com_postinstall','com_privacy','com_redirect','com_search','com_tags','com_templates','com_users','com_wrapper')

Explain

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	jcfv_assets	NULL	ALL	idx_asset_name	NO INDEX KEY COULD BE USED	NULL	NULL	93	40.86	Using where

Profile

Status	Duration
starting	0.06 ms
checking permissions	0.01 ms
Opening tables	0.32 ms
init	0.09 ms
System lock	0.01 ms
optimizing	0.01 ms
statistics	0.12 ms
preparing	0.01 ms
executing	0.00 ms
Sending data	0.24 ms
end	0.01 ms
query end	0.01 ms
closing tables	0.01 ms
freeing items	0.04 ms
cleaning up	0.01 ms

Call Stack

#	Caller	File and line number
18	JDatabaseDriverMysqli->execute()	JROOT/libraries/joomla/database/driver.php:1695
17	JDatabaseDriver->loadObjectList()	JROOT/libraries/src/Access/Access.php:429
16	Joomla\CMS\Access\Access::preloadComponents()	JROOT/libraries/src/Access/Access.php:213
15	Joomla\CMS\Access\Access::preload()	JROOT/libraries/src/Access/Access.php:531
14	Joomla\CMS\Access\Access::getAssetRules()	JROOT/libraries/src/Access/Access.php:183
13	Joomla\CMS\Access\Access::check()	JROOT/libraries/src/User/User.php:398
12	Joomla\CMS\User\User->authorise()	JROOT/components/com_content/models/article.php:58
11	ContentModelArticle->populateState()	JROOT/libraries/src/MVC/Model/BaseDatabaseModel.php:440
10	Joomla\CMS\MVC\Model\BaseDatabaseModel->getState()	JROOT/components/com_content/models/article.php:251
9	ContentModelArticle->hit()	JROOT/components/com_content/controller.php:113
8	ContentController->display()	JROOT/libraries/src/MVC/Controller/BaseController.php:710
7	Joomla\CMS\MVC\Controller\BaseController->execute()	JROOT/components/com_content/content.php:43
6	require_once JROOT/components/com_content/content.php	JROOT/libraries/src/Component/ComponentHelper.php:402
5	Joomla\CMS\Component\ComponentHelper::executeComponent()	JROOT/libraries/src/Component/ComponentHelper.php:377
4	Joomla\CMS\Component\ComponentHelper::renderComponent()	JROOT/libraries/src/Application/SiteApplication.php:194
3	Joomla\CMS\Application\SiteApplication->dispatch()	JROOT/libraries/src/Application/SiteApplication.php:233
2	Joomla\CMS\Application\SiteApplication->doExecute()	JROOT/libraries/src/Application/CMSApplication.php:196
1	Joomla\CMS\Application\CMSApplication->execute()	JROOT/index.php:49

[Add xdebug.file_link_format directive to your php.ini file to have links for files.]

Query Time: 0.46 ms After last query: 0.16 ms Query memory: 0.029 MB Memory before query: 7.373 MB Rows returned: 21

SELECT `id`,`name`,`rules`,`parent_id`

  FROM `jcfv_assets`

  WHERE `name` LIKE 'com_content.%' OR `name` = 'com_content' OR `parent_id` = 0

Explain

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	jcfv_assets	NULL	ALL	idx_asset_name,idx_parent_id	NO INDEX KEY COULD BE USED	NULL	NULL	93	28.00	Using where

Profile

Status	Duration
starting	0.05 ms
checking permissions	0.01 ms
Opening tables	0.01 ms
init	0.02 ms
System lock	0.01 ms
optimizing	0.01 ms
statistics	0.06 ms
preparing	0.01 ms
executing	0.00 ms
Sending data	0.10 ms
end	0.01 ms
query end	0.01 ms
closing tables	0.01 ms
freeing items	0.03 ms
cleaning up	0.01 ms

Call Stack

#	Caller	File and line number
18	JDatabaseDriverMysqli->execute()	JROOT/libraries/joomla/database/driver.php:1695
17	JDatabaseDriver->loadObjectList()	JROOT/libraries/src/Access/Access.php:359
16	Joomla\CMS\Access\Access::preloadPermissions()	JROOT/libraries/src/Access/Access.php:226
15	Joomla\CMS\Access\Access::preload()	JROOT/libraries/src/Access/Access.php:540
14	Joomla\CMS\Access\Access::getAssetRules()	JROOT/libraries/src/Access/Access.php:183
13	Joomla\CMS\Access\Access::check()	JROOT/libraries/src/User/User.php:398
12	Joomla\CMS\User\User->authorise()	JROOT/components/com_content/models/article.php:58
11	ContentModelArticle->populateState()	JROOT/libraries/src/MVC/Model/BaseDatabaseModel.php:440
10	Joomla\CMS\MVC\Model\BaseDatabaseModel->getState()	JROOT/components/com_content/models/article.php:251
9	ContentModelArticle->hit()	JROOT/components/com_content/controller.php:113
8	ContentController->display()	JROOT/libraries/src/MVC/Controller/BaseController.php:710
7	Joomla\CMS\MVC\Controller\BaseController->execute()	JROOT/components/com_content/content.php:43
6	require_once JROOT/components/com_content/content.php	JROOT/libraries/src/Component/ComponentHelper.php:402
5	Joomla\CMS\Component\ComponentHelper::executeComponent()	JROOT/libraries/src/Component/ComponentHelper.php:377
4	Joomla\CMS\Component\ComponentHelper::renderComponent()	JROOT/libraries/src/Application/SiteApplication.php:194
3	Joomla\CMS\Application\SiteApplication->dispatch()	JROOT/libraries/src/Application/SiteApplication.php:233
2	Joomla\CMS\Application\SiteApplication->doExecute()	JROOT/libraries/src/Application/CMSApplication.php:196
1	Joomla\CMS\Application\CMSApplication->execute()	JROOT/index.php:49

[Add xdebug.file_link_format directive to your php.ini file to have links for files.]

Query Time: 1.13 ms After last query: 1.08 ms Query memory: 0.035 MB Memory before query: 7.466 MB Rows returned: 31

SHOW FULL COLUMNS 
  FROM `jcfv_content`

Explain

EXPLAIN not possible on query: SHOW FULL COLUMNS FROM `jcfv_content`

Profile

Status	Duration
starting	0.04 ms
checking permissions	0.01 ms
checking permissions	0.00 ms
Opening tables	0.20 ms
init	0.01 ms
System lock	0.00 ms
optimizing	0.00 ms
statistics	0.01 ms
preparing	0.01 ms
executing	0.01 ms
Opening tables	0.23 ms
checking permissions	0.03 ms
checking permissions	0.01 ms
checking permissions	0.01 ms
checking permissions	0.01 ms
checking permissions	0.01 ms
checking permissions	0.01 ms
checking permissions	0.01 ms
checking permissions	0.01 ms
checking permissions	0.01 ms
checking permissions	0.01 ms
checking permissions	0.01 ms
checking permissions	0.01 ms
checking permissions	0.01 ms
checking permissions	0.01 ms
checking permissions	0.01 ms
checking permissions	0.01 ms
checking permissions	0.01 ms
checking permissions	0.01 ms
checking permissions	0.01 ms
checking permissions	0.01 ms
checking permissions	0.01 ms
checking permissions	0.01 ms
checking permissions	0.01 ms
checking permissions	0.01 ms
checking permissions	0.01 ms
checking permissions	0.01 ms
checking permissions	0.01 ms
checking permissions	0.01 ms
checking permissions	0.01 ms
checking permissions	0.01 ms
checking permissions	0.02 ms
Sending data	0.06 ms
end	0.00 ms
query end	0.01 ms
closing tables	0.00 ms
removing tmp table	0.08 ms
closing tables	0.00 ms
freeing items	0.03 ms
cleaning up	0.01 ms

Call Stack

#	Caller	File and line number
16	JDatabaseDriverMysqli->execute()	JROOT/libraries/joomla/database/driver.php:1695
15	JDatabaseDriver->loadObjectList()	JROOT/libraries/joomla/database/driver/mysqli.php:445
14	JDatabaseDriverMysqli->getTableColumns()	JROOT/libraries/src/Table/Table.php:245
13	Joomla\CMS\Table\Table->getFields()	JROOT/libraries/src/Table/Table.php:164
12	Joomla\CMS\Table\Table->__construct()	JROOT/libraries/src/Table/Content.php:39
11	Joomla\CMS\Table\Content->__construct()	JROOT/libraries/src/Table/Table.php:312
10	Joomla\CMS\Table\Table::getInstance()	JROOT/components/com_content/models/article.php:253
9	ContentModelArticle->hit()	JROOT/components/com_content/controller.php:113
8	ContentController->display()	JROOT/libraries/src/MVC/Controller/BaseController.php:710
7	Joomla\CMS\MVC\Controller\BaseController->execute()	JROOT/components/com_content/content.php:43
6	require_once JROOT/components/com_content/content.php	JROOT/libraries/src/Component/ComponentHelper.php:402
5	Joomla\CMS\Component\ComponentHelper::executeComponent()	JROOT/libraries/src/Component/ComponentHelper.php:377
4	Joomla\CMS\Component\ComponentHelper::renderComponent()	JROOT/libraries/src/Application/SiteApplication.php:194
3	Joomla\CMS\Application\SiteApplication->dispatch()	JROOT/libraries/src/Application/SiteApplication.php:233
2	Joomla\CMS\Application\SiteApplication->doExecute()	JROOT/libraries/src/Application/CMSApplication.php:196
1	Joomla\CMS\Application\CMSApplication->execute()	JROOT/index.php:49

[Add xdebug.file_link_format directive to your php.ini file to have links for files.]

Query Time: 0.41 ms After last query: 2.72 ms Query memory: 0.035 MB Memory before query: 7.774 MB Rows returned: 1

SELECT *

  FROM jcfv_content

  WHERE `id` = '9'

Explain

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	jcfv_content	NULL	const	PRIMARY	PRIMARY	4	const	1	100.00	NULL

Profile

Status	Duration
starting	0.03 ms
checking permissions	0.01 ms
Opening tables	0.01 ms
init	0.02 ms
System lock	0.01 ms
optimizing	0.01 ms
statistics	0.07 ms
preparing	0.01 ms
executing	0.00 ms
Sending data	0.02 ms
end	0.01 ms
query end	0.01 ms
closing tables	0.01 ms
freeing items	0.03 ms
cleaning up	0.01 ms

Call Stack

#	Caller	File and line number
12	JDatabaseDriverMysqli->execute()	JROOT/libraries/joomla/database/driver.php:1459
11	JDatabaseDriver->loadAssoc()	JROOT/libraries/src/Table/Table.php:731
10	Joomla\CMS\Table\Table->load()	JROOT/components/com_content/models/article.php:254
9	ContentModelArticle->hit()	JROOT/components/com_content/controller.php:113
8	ContentController->display()	JROOT/libraries/src/MVC/Controller/BaseController.php:710
7	Joomla\CMS\MVC\Controller\BaseController->execute()	JROOT/components/com_content/content.php:43
6	require_once JROOT/components/com_content/content.php	JROOT/libraries/src/Component/ComponentHelper.php:402
5	Joomla\CMS\Component\ComponentHelper::executeComponent()	JROOT/libraries/src/Component/ComponentHelper.php:377
4	Joomla\CMS\Component\ComponentHelper::renderComponent()	JROOT/libraries/src/Application/SiteApplication.php:194
3	Joomla\CMS\Application\SiteApplication->dispatch()	JROOT/libraries/src/Application/SiteApplication.php:233
2	Joomla\CMS\Application\SiteApplication->doExecute()	JROOT/libraries/src/Application/CMSApplication.php:196
1	Joomla\CMS\Application\CMSApplication->execute()	JROOT/index.php:49

[Add xdebug.file_link_format directive to your php.ini file to have links for files.]

Query Time: 2.28 ms After last query: 0.08 ms Query memory: 0.006 MB Memory before query: 7.786 MB

UPDATE jcfv_content

  SET `hits` = (`hits` + 1)

  WHERE `id` = '9'

Explain

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	UPDATE	jcfv_content	NULL	range	PRIMARY	PRIMARY	4	const	1	100.00	Using where

Profile

Status	Duration
starting	0.03 ms
checking permissions	0.00 ms
Opening tables	0.01 ms
init	0.01 ms
System lock	0.03 ms
updating	0.11 ms
end	0.02 ms
query end	1.94 ms
closing tables	0.02 ms
freeing items	0.02 ms
cleaning up	0.02 ms

Call Stack

#	Caller	File and line number
11	JDatabaseDriverMysqli->execute()	JROOT/libraries/src/Table/Table.php:1245
10	Joomla\CMS\Table\Table->hit()	JROOT/components/com_content/models/article.php:255
9	ContentModelArticle->hit()	JROOT/components/com_content/controller.php:113
8	ContentController->display()	JROOT/libraries/src/MVC/Controller/BaseController.php:710
7	Joomla\CMS\MVC\Controller\BaseController->execute()	JROOT/components/com_content/content.php:43
6	require_once JROOT/components/com_content/content.php	JROOT/libraries/src/Component/ComponentHelper.php:402
5	Joomla\CMS\Component\ComponentHelper::executeComponent()	JROOT/libraries/src/Component/ComponentHelper.php:377
4	Joomla\CMS\Component\ComponentHelper::renderComponent()	JROOT/libraries/src/Application/SiteApplication.php:194
3	Joomla\CMS\Application\SiteApplication->dispatch()	JROOT/libraries/src/Application/SiteApplication.php:233
2	Joomla\CMS\Application\SiteApplication->doExecute()	JROOT/libraries/src/Application/CMSApplication.php:196
1	Joomla\CMS\Application\CMSApplication->execute()	JROOT/index.php:49

[Add xdebug.file_link_format directive to your php.ini file to have links for files.]

Query Time: 1.15 ms After last query: 1.27 ms Query memory: 0.036 MB Memory before query: 7.912 MB Rows returned: 1

SELECT a.id, a.asset_id, a.title, a.alias, a.introtext, a.fulltext, a.state, a.catid, a.created, a.created_by, a.created_by_alias, 
  CASE WHEN a.modified = '0000-00-00 00:00:00' THEN a.created ELSE a.modified END as modified, a.modified_by, a.checked_out, a.checked_out_time, a.publish_up, a.publish_down, a.images, a.urls, a.attribs, a.version, a.ordering, a.metakey, a.metadesc, a.access, a.hits, a.metadata, a.featured, a.language, a.xreference,c.title AS category_title, c.alias AS category_alias, c.access AS category_access,u.name AS author,parent.title as parent_title, parent.id as parent_id, parent.path as parent_route, parent.alias as parent_alias,ROUND(v.rating_sum / v.rating_count, 0) AS rating, v.rating_count as rating_count

  FROM jcfv_content AS a

  INNER JOIN jcfv_categories AS c 
  on c.id = a.catid

  LEFT JOIN jcfv_users AS u 
  on u.id = a.created_by

  LEFT JOIN jcfv_categories as parent 
  ON parent.id = c.parent_id

  LEFT JOIN jcfv_content_rating AS v 
  ON a.id = v.content_id

  WHERE a.id = 9 
  AND c.published > 0 
  AND (a.publish_up = '0000-00-00 00:00:00' OR a.publish_up <= '2024-04-20 05:44:12') 
  AND (a.publish_down = '0000-00-00 00:00:00' OR a.publish_down >= '2024-04-20 05:44:12') 
  AND (a.state = 1 OR a.state =2)

Explain

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	a	NULL	const	PRIMARY,idx_state,idx_catid	PRIMARY	4	const	1	100.00	NULL
1	SIMPLE	c	NULL	const	PRIMARY	PRIMARY	4	const	1	100.00	NULL
1	SIMPLE	u	NULL	const	PRIMARY	PRIMARY	4	const	1	100.00	NULL
1	SIMPLE	parent	NULL	const	PRIMARY	PRIMARY	4	const	1	100.00	NULL
1	SIMPLE	v	NULL	const	PRIMARY	PRIMARY	4	const	0	0.00	unique row not found

Profile

Status	Duration
starting	0.13 ms
checking permissions	0.00 ms
checking permissions	0.00 ms
checking permissions	0.00 ms
checking permissions	0.00 ms
checking permissions	0.01 ms
Opening tables	0.51 ms
init	0.06 ms
System lock	0.01 ms
optimizing	0.02 ms
statistics	0.15 ms
preparing	0.02 ms
executing	0.00 ms
Sending data	0.03 ms
end	0.00 ms
query end	0.01 ms
closing tables	0.02 ms
freeing items	0.04 ms
cleaning up	0.01 ms

Call Stack

#	Caller	File and line number
14	JDatabaseDriverMysqli->execute()	JROOT/libraries/joomla/database/driver.php:1656
13	JDatabaseDriver->loadObject()	JROOT/components/com_content/models/article.php:151
12	ContentModelArticle->getItem()	JROOT/libraries/src/MVC/View/HtmlView.php:425
11	Joomla\CMS\MVC\View\HtmlView->get()	JROOT/components/com_content/views/article/view.html.php:42
10	ContentViewArticle->display()	JROOT/libraries/src/MVC/Controller/BaseController.php:672
9	Joomla\CMS\MVC\Controller\BaseController->display()	JROOT/components/com_content/controller.php:118
8	ContentController->display()	JROOT/libraries/src/MVC/Controller/BaseController.php:710
7	Joomla\CMS\MVC\Controller\BaseController->execute()	JROOT/components/com_content/content.php:43
6	require_once JROOT/components/com_content/content.php	JROOT/libraries/src/Component/ComponentHelper.php:402
5	Joomla\CMS\Component\ComponentHelper::executeComponent()	JROOT/libraries/src/Component/ComponentHelper.php:377
4	Joomla\CMS\Component\ComponentHelper::renderComponent()	JROOT/libraries/src/Application/SiteApplication.php:194
3	Joomla\CMS\Application\SiteApplication->dispatch()	JROOT/libraries/src/Application/SiteApplication.php:233
2	Joomla\CMS\Application\SiteApplication->doExecute()	JROOT/libraries/src/Application/CMSApplication.php:196
1	Joomla\CMS\Application\CMSApplication->execute()	JROOT/index.php:49

[Add xdebug.file_link_format directive to your php.ini file to have links for files.]

Query Time: 0.75 ms After last query: 1.79 ms Query memory: 0.039 MB Memory before query: 8.073 MB Rows returned: 2

SELECT c.id, c.asset_id, c.access, c.alias, c.checked_out, c.checked_out_time,
				c.created_time, c.created_user_id, c.description, c.extension, c.hits, c.language, c.level,
				c.lft, c.metadata, c.metadesc, c.metakey, c.modified_time, c.note, c.params, c.parent_id,
				c.path, c.published, c.rgt, c.title, c.modified_user_id, c.version, 
  CASE WHEN CHAR_LENGTH(c.alias) != 0 THEN CONCAT_WS(':', c.id, c.alias) ELSE c.id END as slug

  FROM `jcfv_categories` AS `s`

  INNER JOIN `jcfv_categories` AS `c` 
  ON (s.lft <= c.lft 
  AND c.lft < s.rgt) OR (c.lft < s.lft 
  AND s.rgt < c.rgt)

  WHERE (c.extension='com_content' OR c.extension='system') 
  AND c.access IN (1,1,5) 
  AND c.published = 1 
  AND s.id = 2

  ORDER BY c.lft

Explain

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	s	NULL	const	PRIMARY,idx_left_right	PRIMARY	4	const	1	100.00	NULL
1	SIMPLE	c	NULL	range	cat_idx,idx_access,idx_left_right	idx_left_right	4	NULL	2	71.43	Using index condition; Using where

Profile

Status	Duration
starting	0.10 ms
checking permissions	0.01 ms
checking permissions	0.00 ms
Opening tables	0.02 ms
init	0.06 ms
System lock	0.01 ms
optimizing	0.01 ms
statistics	0.11 ms
preparing	0.02 ms
Sorting result	0.00 ms
executing	0.00 ms
Sending data	0.11 ms
end	0.01 ms
query end	0.01 ms
closing tables	0.01 ms
freeing items	0.03 ms
cleaning up	0.01 ms

Call Stack

#	Caller	File and line number
24	JDatabaseDriverMysqli->execute()	JROOT/libraries/joomla/database/driver.php:1695
23	JDatabaseDriver->loadObjectList()	JROOT/libraries/src/Categories/Categories.php:324
22	Joomla\CMS\Categories\Categories->_load()	JROOT/libraries/src/Categories/Categories.php:184
21	Joomla\CMS\Categories\Categories->get()	JROOT/components/com_content/router.php:72
20	ContentRouter->getCategorySegment()	Same as call in the line below.
19	call_user_func_array()	JROOT/libraries/src/Component/Router/RouterView.php:120
18	Joomla\CMS\Component\Router\RouterView->getPath()	JROOT/libraries/src/Component/Router/Rules/MenuRules.php:111
17	Joomla\CMS\Component\Router\Rules\MenuRules->preprocess()	JROOT/libraries/src/Component/Router/RouterView.php:222
16	Joomla\CMS\Component\Router\RouterView->preprocess()	JROOT/libraries/src/Router/SiteRouter.php:672
15	Joomla\CMS\Router\SiteRouter->processBuildRules()	JROOT/libraries/src/Router/Router.php:266
14	Joomla\CMS\Router\Router->build()	JROOT/libraries/src/Router/SiteRouter.php:154
13	Joomla\CMS\Router\SiteRouter->build()	JROOT/libraries/src/Router/Route.php:102
12	Joomla\CMS\Router\Route::link()	JROOT/libraries/src/Router/Route.php:52
11	Joomla\CMS\Router\Route::_()	JROOT/components/com_content/views/article/view.html.php:71
10	ContentViewArticle->display()	JROOT/libraries/src/MVC/Controller/BaseController.php:672
9	Joomla\CMS\MVC\Controller\BaseController->display()	JROOT/components/com_content/controller.php:118
8	ContentController->display()	JROOT/libraries/src/MVC/Controller/BaseController.php:710
7	Joomla\CMS\MVC\Controller\BaseController->execute()	JROOT/components/com_content/content.php:43
6	require_once JROOT/components/com_content/content.php	JROOT/libraries/src/Component/ComponentHelper.php:402
5	Joomla\CMS\Component\ComponentHelper::executeComponent()	JROOT/libraries/src/Component/ComponentHelper.php:377
4	Joomla\CMS\Component\ComponentHelper::renderComponent()	JROOT/libraries/src/Application/SiteApplication.php:194
3	Joomla\CMS\Application\SiteApplication->dispatch()	JROOT/libraries/src/Application/SiteApplication.php:233
2	Joomla\CMS\Application\SiteApplication->doExecute()	JROOT/libraries/src/Application/CMSApplication.php:196
1	Joomla\CMS\Application\CMSApplication->execute()	JROOT/index.php:49

[Add xdebug.file_link_format directive to your php.ini file to have links for files.]

Query Time: 0.84 ms After last query: 0.65 ms Query memory: 0.034 MB Memory before query: 8.126 MB Rows returned: 0

SELECT `m`.`tag_id`,`t`.*

  FROM `jcfv_contentitem_tag_map` AS m 

  INNER JOIN `jcfv_tags` AS t  
  ON `m`.`tag_id` = `t`.`id`

  WHERE `m`.`type_alias` = 'com_content.article' 
  AND `m`.`content_item_id` = 9 
  AND `t`.`published` = 1 
  AND t.access IN (1,1,5)

Explain

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	m	NULL	ALL	idx_tag_type	NO INDEX KEY COULD BE USED	NULL	NULL	1	100.00	Using where
1	SIMPLE	t	NULL	eq_ref	PRIMARY,tag_idx,idx_access	PRIMARY	4	db768633771.m.tag_id	1	100.00	Using where

Profile

Status	Duration
starting	0.04 ms
checking permissions	0.01 ms
checking permissions	0.00 ms
Opening tables	0.47 ms
init	0.04 ms
System lock	0.01 ms
optimizing	0.01 ms
statistics	0.06 ms
preparing	0.01 ms
executing	0.00 ms
Sending data	0.03 ms
end	0.00 ms
query end	0.01 ms
closing tables	0.01 ms
freeing items	0.03 ms
cleaning up	0.01 ms

Call Stack

#	Caller	File and line number
13	JDatabaseDriverMysqli->execute()	JROOT/libraries/joomla/database/driver.php:1695
12	JDatabaseDriver->loadObjectList()	JROOT/libraries/src/Helper/TagsHelper.php:454
11	Joomla\CMS\Helper\TagsHelper->getItemTags()	JROOT/components/com_content/views/article/view.html.php:184
10	ContentViewArticle->display()	JROOT/libraries/src/MVC/Controller/BaseController.php:672
9	Joomla\CMS\MVC\Controller\BaseController->display()	JROOT/components/com_content/controller.php:118
8	ContentController->display()	JROOT/libraries/src/MVC/Controller/BaseController.php:710
7	Joomla\CMS\MVC\Controller\BaseController->execute()	JROOT/components/com_content/content.php:43
6	require_once JROOT/components/com_content/content.php	JROOT/libraries/src/Component/ComponentHelper.php:402
5	Joomla\CMS\Component\ComponentHelper::executeComponent()	JROOT/libraries/src/Component/ComponentHelper.php:377
4	Joomla\CMS\Component\ComponentHelper::renderComponent()	JROOT/libraries/src/Application/SiteApplication.php:194
3	Joomla\CMS\Application\SiteApplication->dispatch()	JROOT/libraries/src/Application/SiteApplication.php:233
2	Joomla\CMS\Application\SiteApplication->doExecute()	JROOT/libraries/src/Application/CMSApplication.php:196
1	Joomla\CMS\Application\CMSApplication->execute()	JROOT/index.php:49

[Add xdebug.file_link_format directive to your php.ini file to have links for files.]

Query Time: 1.29 ms After last query: 4.27 ms Query memory: 0.037 MB Memory before query: 8.629 MB Rows returned: 0

SELECT a.id, a.title, a.name, a.checked_out, a.checked_out_time, a.note, a.state, a.access, a.created_time, a.created_user_id, a.ordering, a.language, a.fieldparams, a.params, a.type, a.default_value, a.context, a.group_id, a.label, a.description, a.required,l.title AS language_title, l.image AS language_image,uc.name AS editor,ag.title AS access_level,ua.name AS author_name,g.title AS group_title, g.access as group_access, g.state AS group_state, g.note as group_note

  FROM jcfv_fields AS a

  LEFT JOIN `jcfv_languages` AS l 
  ON l.lang_code = a.language

  LEFT JOIN jcfv_users AS uc 
  ON uc.id=a.checked_out

  LEFT JOIN jcfv_viewlevels AS ag 
  ON ag.id = a.access

  LEFT JOIN jcfv_users AS ua 
  ON ua.id = a.created_user_id

  LEFT JOIN jcfv_fields_groups AS g 
  ON g.id = a.group_id

  LEFT JOIN `jcfv_fields_categories` AS fc 
  ON fc.field_id = a.id

  WHERE a.context = 'com_content.article' 
  AND (fc.category_id IS NULL OR fc.category_id IN (2,0)) 
  AND a.access IN (1,1,5) 
  AND (a.group_id = 0 OR g.access IN (1,1,5)) 
  AND a.state = 1 
  AND (a.group_id = 0 OR g.state = 1)

  ORDER BY a.ordering ASC

Explain

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	a	NULL	ref	idx_state,idx_access,idx_context	idx_state	1	const	1	100.00	Using index condition; Using where; Using filesort
1	SIMPLE	l	NULL	eq_ref	idx_langcode	idx_langcode	28	db768633771.a.language	1	100.00	Using where
1	SIMPLE	uc	NULL	eq_ref	PRIMARY	PRIMARY	4	db768633771.a.checked_out	1	100.00	NULL
1	SIMPLE	ag	NULL	eq_ref	PRIMARY	PRIMARY	4	db768633771.a.access	1	100.00	Using where
1	SIMPLE	ua	NULL	eq_ref	PRIMARY	PRIMARY	4	db768633771.a.created_user_id	1	100.00	Using where
1	SIMPLE	g	NULL	eq_ref	PRIMARY	PRIMARY	4	db768633771.a.group_id	1	100.00	Using where
1	SIMPLE	fc	NULL	ref	PRIMARY	PRIMARY	4	db768633771.a.id	1	100.00	Using where; Using index

Profile

Status	Duration
starting	0.10 ms
checking permissions	0.00 ms
checking permissions	0.00 ms
checking permissions	0.00 ms
checking permissions	0.03 ms
checking permissions	0.01 ms
checking permissions	0.00 ms
checking permissions	0.00 ms
Opening tables	0.64 ms
init	0.06 ms
System lock	0.01 ms
optimizing	0.02 ms
statistics	0.09 ms
preparing	0.03 ms
Sorting result	0.01 ms
executing	0.00 ms
Sending data	0.02 ms
Creating sort index	0.04 ms
end	0.00 ms
query end	0.01 ms
closing tables	0.02 ms
freeing items	0.03 ms
cleaning up	0.01 ms

Call Stack

#	Caller	File and line number
19	JDatabaseDriverMysqli->execute()	JROOT/libraries/joomla/database/driver.php:1695
18	JDatabaseDriver->loadObjectList()	JROOT/libraries/src/MVC/Model/BaseDatabaseModel.php:308
17	Joomla\CMS\MVC\Model\BaseDatabaseModel->_getList()	JROOT/administrator/components/com_fields/models/fields.php:333
16	FieldsModelFields->_getList()	JROOT/libraries/src/MVC/Model/ListModel.php:187
15	Joomla\CMS\MVC\Model\ListModel->getItems()	JROOT/administrator/components/com_fields/helpers/fields.php:135
14	FieldsHelper::getFields()	JROOT/plugins/system/fields/fields.php:488
13	PlgSystemFields->onContentPrepare()	JROOT/libraries/joomla/event/event.php:70
12	JEvent->update()	JROOT/libraries/joomla/event/dispatcher.php:160
11	JEventDispatcher->trigger()	JROOT/components/com_content/views/article/view.html.php:193
10	ContentViewArticle->display()	JROOT/libraries/src/MVC/Controller/BaseController.php:672
9	Joomla\CMS\MVC\Controller\BaseController->display()	JROOT/components/com_content/controller.php:118
8	ContentController->display()	JROOT/libraries/src/MVC/Controller/BaseController.php:710
7	Joomla\CMS\MVC\Controller\BaseController->execute()	JROOT/components/com_content/content.php:43
6	require_once JROOT/components/com_content/content.php	JROOT/libraries/src/Component/ComponentHelper.php:402
5	Joomla\CMS\Component\ComponentHelper::executeComponent()	JROOT/libraries/src/Component/ComponentHelper.php:377
4	Joomla\CMS\Component\ComponentHelper::renderComponent()	JROOT/libraries/src/Application/SiteApplication.php:194
3	Joomla\CMS\Application\SiteApplication->dispatch()	JROOT/libraries/src/Application/SiteApplication.php:233
2	Joomla\CMS\Application\SiteApplication->doExecute()	JROOT/libraries/src/Application/CMSApplication.php:196
1	Joomla\CMS\Application\CMSApplication->execute()	JROOT/index.php:49

[Add xdebug.file_link_format directive to your php.ini file to have links for files.]

Query Time: 1.05 ms After last query: 10.30 ms Query memory: 0.035 MB Memory before query: 9.682 MB Rows returned: 5

SELECT m.id, m.title, m.module, m.position, m.content, m.showtitle, m.params, mm.menuid

  FROM jcfv_modules AS m

  LEFT JOIN jcfv_modules_menu AS mm 
  ON mm.moduleid = m.id

  LEFT JOIN jcfv_extensions AS e 
  ON e.element = m.module 
  AND e.client_id = m.client_id

  WHERE m.published = 1 
  AND e.enabled = 1 
  AND (m.publish_up = '0000-00-00 00:00:00' OR m.publish_up <= '2024-04-20 05:44:12') 
  AND (m.publish_down = '0000-00-00 00:00:00' OR m.publish_down >= '2024-04-20 05:44:12') 
  AND m.access IN (1,1,5) 
  AND m.client_id = 0 
  AND (mm.menuid = 101 OR mm.menuid <= 0)

  ORDER BY m.position, m.ordering

Explain

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	m	NULL	range	PRIMARY,published,newsfeeds	published	5	NULL	9	3.85	Using index condition; Using where; Using filesort
1	SIMPLE	e	NULL	ref	element_clientid,element_folder_clientid	element_clientid	403	db768633771.m.module,const	1	10.00	Using index condition; Using where
1	SIMPLE	mm	NULL	ref	PRIMARY	PRIMARY	4	db768633771.m.id	1	40.00	Using where; Using index

Profile

Status	Duration
starting	0.08 ms
checking permissions	0.00 ms
checking permissions	0.00 ms
checking permissions	0.00 ms
Opening tables	0.31 ms
init	0.04 ms
System lock	0.01 ms
optimizing	0.02 ms
statistics	0.07 ms
preparing	0.03 ms
Sorting result	0.01 ms
executing	0.00 ms
Sending data	0.01 ms
Creating sort index	0.19 ms
end	0.01 ms
query end	0.01 ms
closing tables	0.02 ms
freeing items	0.04 ms
cleaning up	0.01 ms

Call Stack

#	Caller	File and line number
15	JDatabaseDriverMysqli->execute()	JROOT/libraries/joomla/database/driver.php:1695
14	JDatabaseDriver->loadObjectList()	Same as call in the line below.
13	call_user_func_array()	JROOT/libraries/src/Cache/Controller/CallbackController.php:173
12	Joomla\CMS\Cache\Controller\CallbackController->get()	JROOT/libraries/src/Helper/ModuleHelper.php:432
11	Joomla\CMS\Helper\ModuleHelper::getModuleList()	JROOT/libraries/src/Helper/ModuleHelper.php:362
10	Joomla\CMS\Helper\ModuleHelper::load()	JROOT/libraries/src/Helper/ModuleHelper.php:87
9	Joomla\CMS\Helper\ModuleHelper::getModules()	JROOT/libraries/src/Document/HtmlDocument.php:581
8	Joomla\CMS\Document\HtmlDocument->countModules()	JROOT/templates/custom-protostar/index.php:95
7	require JROOT/templates/custom-protostar/index.php	JROOT/libraries/src/Document/HtmlDocument.php:658
6	Joomla\CMS\Document\HtmlDocument->_loadTemplate()	JROOT/libraries/src/Document/HtmlDocument.php:720
5	Joomla\CMS\Document\HtmlDocument->_fetchTemplate()	JROOT/libraries/src/Document/HtmlDocument.php:535
4	Joomla\CMS\Document\HtmlDocument->parse()	JROOT/libraries/src/Application/CMSApplication.php:1030
3	Joomla\CMS\Application\CMSApplication->render()	JROOT/libraries/src/Application/SiteApplication.php:778
2	Joomla\CMS\Application\SiteApplication->render()	JROOT/libraries/src/Application/CMSApplication.php:202
1	Joomla\CMS\Application\CMSApplication->execute()	JROOT/index.php:49

[Add xdebug.file_link_format directive to your php.ini file to have links for files.]

Query Time: 0.58 ms After last query: 1.69 ms Query memory: 0.038 MB Memory before query: 9.770 MB Rows returned: 0

SELECT a.id, a.title, a.name, a.checked_out, a.checked_out_time, a.note, a.state, a.access, a.created_time, a.created_user_id, a.ordering, a.language, a.fieldparams, a.params, a.type, a.default_value, a.context, a.group_id, a.label, a.description, a.required,l.title AS language_title, l.image AS language_image,uc.name AS editor,ag.title AS access_level,ua.name AS author_name,g.title AS group_title, g.access as group_access, g.state AS group_state, g.note as group_note

  FROM jcfv_fields AS a

  LEFT JOIN `jcfv_languages` AS l 
  ON l.lang_code = a.language

  LEFT JOIN jcfv_users AS uc 
  ON uc.id=a.checked_out

  LEFT JOIN jcfv_viewlevels AS ag 
  ON ag.id = a.access

  LEFT JOIN jcfv_users AS ua 
  ON ua.id = a.created_user_id

  LEFT JOIN jcfv_fields_groups AS g 
  ON g.id = a.group_id

  LEFT JOIN `jcfv_fields_categories` AS fc 
  ON fc.field_id = a.id

  WHERE a.context = 'mod_custom.content' 
  AND (fc.category_id IS NULL OR fc.category_id IN (2,0)) 
  AND a.access IN (1,1,5) 
  AND (a.group_id = 0 OR g.access IN (1,1,5)) 
  AND a.state = 1 
  AND (a.group_id = 0 OR g.state = 1)

  ORDER BY a.ordering ASC

Explain

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	a	NULL	ref	idx_state,idx_access,idx_context	idx_state	1	const	1	100.00	Using index condition; Using where; Using filesort
1	SIMPLE	l	NULL	eq_ref	idx_langcode	idx_langcode	28	db768633771.a.language	1	100.00	Using where
1	SIMPLE	uc	NULL	eq_ref	PRIMARY	PRIMARY	4	db768633771.a.checked_out	1	100.00	NULL
1	SIMPLE	ag	NULL	eq_ref	PRIMARY	PRIMARY	4	db768633771.a.access	1	100.00	Using where
1	SIMPLE	ua	NULL	eq_ref	PRIMARY	PRIMARY	4	db768633771.a.created_user_id	1	100.00	Using where
1	SIMPLE	g	NULL	eq_ref	PRIMARY	PRIMARY	4	db768633771.a.group_id	1	100.00	Using where
1	SIMPLE	fc	NULL	ref	PRIMARY	PRIMARY	4	db768633771.a.id	1	100.00	Using where; Using index

Profile

Status	Duration
starting	0.09 ms
checking permissions	0.00 ms
checking permissions	0.00 ms
checking permissions	0.00 ms
checking permissions	0.00 ms
checking permissions	0.00 ms
checking permissions	0.00 ms
checking permissions	0.00 ms
Opening tables	0.03 ms
init	0.05 ms
System lock	0.01 ms
optimizing	0.02 ms
statistics	0.09 ms
preparing	0.02 ms
Sorting result	0.01 ms
executing	0.00 ms
Sending data	0.02 ms
Creating sort index	0.03 ms
end	0.00 ms
query end	0.01 ms
closing tables	0.01 ms
freeing items	0.03 ms
cleaning up	0.01 ms

Call Stack

#	Caller	File and line number
23	JDatabaseDriverMysqli->execute()	JROOT/libraries/joomla/database/driver.php:1695
22	JDatabaseDriver->loadObjectList()	JROOT/libraries/src/MVC/Model/BaseDatabaseModel.php:308
21	Joomla\CMS\MVC\Model\BaseDatabaseModel->_getList()	JROOT/administrator/components/com_fields/models/fields.php:333
20	FieldsModelFields->_getList()	JROOT/libraries/src/MVC/Model/ListModel.php:187
19	Joomla\CMS\MVC\Model\ListModel->getItems()	JROOT/administrator/components/com_fields/helpers/fields.php:135
18	FieldsHelper::getFields()	JROOT/plugins/system/fields/fields.php:488
17	PlgSystemFields->onContentPrepare()	JROOT/libraries/joomla/event/event.php:70
16	JEvent->update()	JROOT/libraries/joomla/event/dispatcher.php:160
15	JEventDispatcher->trigger()	JROOT/libraries/cms/html/content.php:41
14	JHtmlContent::prepare()	Same as call in the line below.
13	call_user_func_array()	JROOT/libraries/src/HTML/HTMLHelper.php:239
12	Joomla\CMS\HTML\HTMLHelper::call()	JROOT/libraries/src/HTML/HTMLHelper.php:146
11	Joomla\CMS\HTML\HTMLHelper::_()	JROOT/modules/mod_custom/mod_custom.php:15
10	include JROOT/modules/mod_custom/mod_custom.php	JROOT/libraries/src/Helper/ModuleHelper.php:200
9	Joomla\CMS\Helper\ModuleHelper::renderModule()	JROOT/libraries/src/Document/Renderer/Html/ModuleRenderer.php:98
8	Joomla\CMS\Document\Renderer\Html\ModuleRenderer->render()	JROOT/libraries/src/Document/Renderer/Html/ModulesRenderer.php:47
7	Joomla\CMS\Document\Renderer\Html\ModulesRenderer->render()	JROOT/libraries/src/Document/HtmlDocument.php:491
6	Joomla\CMS\Document\HtmlDocument->getBuffer()	JROOT/libraries/src/Document/HtmlDocument.php:783
5	Joomla\CMS\Document\HtmlDocument->_renderTemplate()	JROOT/libraries/src/Document/HtmlDocument.php:557
4	Joomla\CMS\Document\HtmlDocument->render()	JROOT/libraries/src/Application/CMSApplication.php:1044
3	Joomla\CMS\Application\CMSApplication->render()	JROOT/libraries/src/Application/SiteApplication.php:778
2	Joomla\CMS\Application\SiteApplication->render()	JROOT/libraries/src/Application/CMSApplication.php:202
1	Joomla\CMS\Application\CMSApplication->execute()	JROOT/index.php:49

[Add xdebug.file_link_format directive to your php.ini file to have links for files.]

Query Time: 0.49 ms After last query: 2.96 ms Query memory: 0.026 MB Memory before query: 9.923 MB Rows returned: 1

SELECT `alias`

  FROM `jcfv_contact_details`

  WHERE id = '1'

Explain

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	jcfv_contact_details	NULL	const	PRIMARY	PRIMARY	4	const	1	100.00	NULL

Profile

Status	Duration
starting	0.03 ms
checking permissions	0.01 ms
Opening tables	0.19 ms
init	0.02 ms
System lock	0.01 ms
optimizing	0.01 ms
statistics	0.03 ms
preparing	0.01 ms
executing	0.00 ms
Sending data	0.01 ms
end	0.01 ms
query end	0.01 ms
closing tables	0.01 ms
freeing items	0.03 ms
cleaning up	0.01 ms

Call Stack

#	Caller	File and line number
19	JDatabaseDriverMysqli->execute()	JROOT/libraries/joomla/database/driver.php:1734
18	JDatabaseDriver->loadResult()	JROOT/components/com_contact/router.php:121
17	ContactRouter->getContactSegment()	Same as call in the line below.
16	call_user_func_array()	JROOT/libraries/src/Component/Router/RouterView.php:120
15	Joomla\CMS\Component\Router\RouterView->getPath()	JROOT/libraries/src/Component/Router/Rules/MenuRules.php:111
14	Joomla\CMS\Component\Router\Rules\MenuRules->preprocess()	JROOT/libraries/src/Component/Router/RouterView.php:222
13	Joomla\CMS\Component\Router\RouterView->preprocess()	JROOT/libraries/src/Router/SiteRouter.php:672
12	Joomla\CMS\Router\SiteRouter->processBuildRules()	JROOT/libraries/src/Router/Router.php:266
11	Joomla\CMS\Router\Router->build()	JROOT/libraries/src/Router/SiteRouter.php:154
10	Joomla\CMS\Router\SiteRouter->build()	JROOT/libraries/src/Router/Route.php:102
9	Joomla\CMS\Router\Route::link()	JROOT/libraries/src/Router/Route.php:52
8	Joomla\CMS\Router\Route::_()	JROOT/plugins/system/sef/sef.php:110
7	PlgSystemSef->onAfterRender()	JROOT/libraries/joomla/event/event.php:70
6	JEvent->update()	JROOT/libraries/joomla/event/dispatcher.php:160
5	JEventDispatcher->trigger()	JROOT/libraries/src/Application/BaseApplication.php:108
4	Joomla\CMS\Application\BaseApplication->triggerEvent()	JROOT/libraries/src/Application/CMSApplication.php:1050
3	Joomla\CMS\Application\CMSApplication->render()	JROOT/libraries/src/Application/SiteApplication.php:778
2	Joomla\CMS\Application\SiteApplication->render()	JROOT/libraries/src/Application/CMSApplication.php:202
1	Joomla\CMS\Application\CMSApplication->execute()	JROOT/index.php:49

[Add xdebug.file_link_format directive to your php.ini file to have links for files.]

Query Time: 0.59 ms After last query: 0.17 ms Query memory: 0.038 MB Memory before query: 9.939 MB Rows returned: 2

SELECT c.id, c.asset_id, c.access, c.alias, c.checked_out, c.checked_out_time,
				c.created_time, c.created_user_id, c.description, c.extension, c.hits, c.language, c.level,
				c.lft, c.metadata, c.metadesc, c.metakey, c.modified_time, c.note, c.params, c.parent_id,
				c.path, c.published, c.rgt, c.title, c.modified_user_id, c.version, 
  CASE WHEN CHAR_LENGTH(c.alias) != 0 THEN CONCAT_WS(':', c.id, c.alias) ELSE c.id END as slug

  FROM `jcfv_categories` AS `s`

  INNER JOIN `jcfv_categories` AS `c` 
  ON (s.lft <= c.lft 
  AND c.lft < s.rgt) OR (c.lft < s.lft 
  AND s.rgt < c.rgt)

  WHERE (c.extension='com_contact' OR c.extension='system') 
  AND c.access IN (1,1,5) 
  AND c.published = 1 
  AND s.id = 4

  ORDER BY c.lft

Explain

id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	s	NULL	const	PRIMARY,idx_left_right	PRIMARY	4	const	1	100.00	Using filesort
1	SIMPLE	c	NULL	ALL	cat_idx,idx_access,idx_left_right	NO INDEX KEY COULD BE USED	NULL	NULL	7	32.65	Using where

Profile

Status	Duration
starting	0.09 ms
checking permissions	0.00 ms
checking permissions	0.00 ms
Opening tables	0.01 ms
init	0.04 ms
System lock	0.01 ms
optimizing	0.01 ms
statistics	0.09 ms
preparing	0.02 ms
Sorting result	0.00 ms
executing	0.01 ms
Sending data	0.02 ms
Creating sort index	0.10 ms
end	0.01 ms
query end	0.01 ms
closing tables	0.01 ms
freeing items	0.03 ms
cleaning up	0.01 ms

Call Stack

#	Caller	File and line number
21	JDatabaseDriverMysqli->execute()	JROOT/libraries/joomla/database/driver.php:1695
20	JDatabaseDriver->loadObjectList()	JROOT/libraries/src/Categories/Categories.php:324
19	Joomla\CMS\Categories\Categories->_load()	JROOT/libraries/src/Categories/Categories.php:184
18	Joomla\CMS\Categories\Categories->get()	JROOT/components/com_contact/router.php:68
17	ContactRouter->getCategorySegment()	Same as call in the line below.
16	call_user_func_array()	JROOT/libraries/src/Component/Router/RouterView.php:120
15	Joomla\CMS\Component\Router\RouterView->getPath()	JROOT/libraries/src/Component/Router/Rules/MenuRules.php:111
14	Joomla\CMS\Component\Router\Rules\MenuRules->preprocess()	JROOT/libraries/src/Component/Router/RouterView.php:222
13	Joomla\CMS\Component\Router\RouterView->preprocess()	JROOT/libraries/src/Router/SiteRouter.php:672
12	Joomla\CMS\Router\SiteRouter->processBuildRules()	JROOT/libraries/src/Router/Router.php:266
11	Joomla\CMS\Router\Router->build()	JROOT/libraries/src/Router/SiteRouter.php:154
10	Joomla\CMS\Router\SiteRouter->build()	JROOT/libraries/src/Router/Route.php:102
9	Joomla\CMS\Router\Route::link()	JROOT/libraries/src/Router/Route.php:52
8	Joomla\CMS\Router\Route::_()	JROOT/plugins/system/sef/sef.php:110
7	PlgSystemSef->onAfterRender()	JROOT/libraries/joomla/event/event.php:70
6	JEvent->update()	JROOT/libraries/joomla/event/dispatcher.php:160
5	JEventDispatcher->trigger()	JROOT/libraries/src/Application/BaseApplication.php:108
4	Joomla\CMS\Application\BaseApplication->triggerEvent()	JROOT/libraries/src/Application/CMSApplication.php:1050
3	Joomla\CMS\Application\CMSApplication->render()	JROOT/libraries/src/Application/SiteApplication.php:778
2	Joomla\CMS\Application\SiteApplication->render()	JROOT/libraries/src/Application/CMSApplication.php:202
1	Joomla\CMS\Application\CMSApplication->execute()	JROOT/index.php:49

[Add xdebug.file_link_format directive to your php.ini file to have links for files.]

21 Query Types Logged, Sorted by Occurrences.

SELECT Tables:

2 × SELECT `id`,`name`,`rules`,`parent_id` 
  FROM `jcfv_assets`

2 × SELECT `extension_id` AS `id`,`element` AS `option`,`params`,`enabled` 
  FROM `jcfv_extensions`

2 × SELECT a.id, a.title, a.name, a.checked_out, a.checked_out_time, a.note, a.state, a.access, a.created_time, a.created_user_id, a.ordering, a.language, a.fieldparams, a.params, a.type, a.default_value, a.context, a.group_id, a.label, a.description, a.required,l.title AS language_title, l.image AS language_image,uc.name AS editor,ag.title AS access_level,ua.name AS author_name,g.title AS group_title, g.access as group_access, g.state AS group_state, g.note as group_note 
  FROM jcfv_fields AS a 
  LEFT JOIN `jcfv_languages` AS l 
  ON l.lang_code = a.language 
  LEFT JOIN jcfv_users AS uc 
  ON uc.id=a.checked_out 
  LEFT JOIN jcfv_viewlevels AS ag 
  ON ag.id = a.access 
  LEFT JOIN jcfv_users AS ua 
  ON ua.id = a.created_user_id 
  LEFT JOIN jcfv_fields_groups AS g 
  ON g.id = a.group_id 
  LEFT JOIN `jcfv_fields_categories` AS fc 
  ON fc.field_id = a.id

2 × SELECT c.id, c.asset_id, c.access, c.alias, c.checked_out, c.checked_out_time,     c.created_time, c.created_user_id, c.description, c.extension, c.hits, c.language, c.level,     c.lft, c.metadata, c.metadesc, c.metakey, c.modified_time, c.note, c.params, c.parent_id,     c.path, c.published, c.rgt, c.title, c.modified_user_id, c.version, 
  CASE WHEN CHAR_LENGTH(c.alias) != 0 THEN CONCAT_WS(':', c.id, c.alias) ELSE c.id END as slug 
  FROM `jcfv_categories` AS `s` 
  INNER JOIN `jcfv_categories` AS `c` 
  ON (s.lft <= c.lft 
  AND c.lft < s.rgt) OR (c.lft < s.lft 
  AND s.rgt < c.rgt)

1 × SELECT `data` 
  FROM `jcfv_session`

1 × SELECT m.id, m.title, m.module, m.position, m.content, m.showtitle, m.params, mm.menuid 
  FROM jcfv_modules AS m 
  LEFT JOIN jcfv_modules_menu AS mm 
  ON mm.moduleid = m.id 
  LEFT JOIN jcfv_extensions AS e 
  ON e.element = m.module 
  AND e.client_id = m.client_id

1 × SELECT `m`.`tag_id`,`t`.* 
  FROM `jcfv_contentitem_tag_map` AS m  
  INNER JOIN `jcfv_tags` AS t  
  ON `m`.`tag_id` = `t`.`id`

1 × SELECT a.id, a.asset_id, a.title, a.alias, a.introtext, a.fulltext, a.state, a.catid, a.created, a.created_by, a.created_by_alias, 
  CASE WHEN a.modified = '0000-00-00 00:00:00' THEN a.created ELSE a.modified END as modified, a.modified_by, a.checked_out, a.checked_out_time, a.publish_up, a.publish_down, a.images, a.urls, a.attribs, a.version, a.ordering, a.metakey, a.metadesc, a.access, a.hits, a.metadata, a.featured, a.language, a.xreference,c.title AS category_title, c.alias AS category_alias, c.access AS category_access,u.name AS author,parent.title as parent_title, parent.id as parent_id, parent.path as parent_route, parent.alias as parent_alias,ROUND(v.rating_sum / v.rating_count, 0) AS rating, v.rating_count as rating_count 
  FROM jcfv_content AS a 
  INNER JOIN jcfv_categories AS c 
  on c.id = a.catid 
  LEFT JOIN jcfv_users AS u 
  on u.id = a.created_by 
  LEFT JOIN jcfv_categories as parent 
  ON parent.id = c.parent_id 
  LEFT JOIN jcfv_content_rating AS v 
  ON a.id = v.content_id

```
1 × SELECT * 
  FROM jcfv_content
```

1 × SELECT id, home, template, s.params 
  FROM jcfv_template_styles as s 
  LEFT JOIN jcfv_extensions as e 
  ON e.element=s.template 
  AND e.type='template' 
  AND e.client_id=s.client_id

1 × SELECT `session_id` 
  FROM `jcfv_session`

```
1 × SELECT * 
  FROM jcfv_languages
```

1 × SELECT m.id, m.menutype, m.title, m.alias, m.note, m.path AS route, m.link, m.type, m.level, m.language,`m`.`browserNav`, m.access, m.params, m.home, m.img, m.template_style_id, m.component_id, m.parent_id,e.element as component 
  FROM jcfv_menu AS m 
  LEFT JOIN jcfv_extensions AS e 
  ON m.component_id = e.extension_id

1 × SELECT `folder` AS `type`,`element` AS `name`,`params` AS `params`,`extension_id` AS `id` 
  FROM jcfv_extensions

1 × SELECT b.id 
  FROM jcfv_usergroups AS a 
  LEFT JOIN jcfv_usergroups AS b 
  ON b.lft <= a.lft 
  AND b.rgt >= a.rgt

1 × SELECT id, rules 
  FROM `jcfv_viewlevels

1 × SELECT `alias` 
  FROM `jcfv_contact_details`

OTHER Tables:

1 × INSERT INTO `jcfv_session` (`session_id`,`guest`,`time`,`userid`,`username`,`client_id`) 
  VALUES  ('bde6c39fb5068fc28a3c6c9434cc68c1', 1, 1713591852, 0, '', 0

1 × UPDATE `jcfv_extensions` 
  SET `params` = '{\"mediaversion\":\"2a930e84ce56663e793e3673cc7e1a97\"}'

1 × SHOW FULL COLUMNS 
  FROM `jcfv_content

1 × UPDATE jcfv_content 
  SET `hits` = (`hits` + 1)