Boone Gorges 1708a580fd Overhaul SQL generating logic in WP_Meta_Query to avoid unnecessary table joins. ... The logic used to generate clause SQL in `WP_Meta_Query` is somewhat arcane, stemming mostly from an ongoing effort to eliminate costly table joins when they are not necessary. By systematizing the process of looking for shareable joins - as was done in `WP_Tax_Query` [29902] - it becomes possible to simplify the construction of SQL queries in `get_sql_for_clause()`. Moreover, the simplified logic is actually considerably better at identifying shareable joins, such that certain uses of `WP_Meta_Query` will see joins reduced by 50% or more. Includes integration tests for a representative cross-section of the query clause combinations that result in shared table aliases. Props boonebgorges, sc0ttkclark. See #24093. git-svn-id: https://develop.svn.wordpress.org/trunk@29940 602fd350-edb4-49c9-b593-d223f7449a82		2014-10-17 20:20:04 +00:00
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attachments.php	Make sure the $parent argument of wp_insert_attachment() still works as expected after [28579].	2014-09-15 14:23:31 +00:00
filtering.php	Move PHPUnit tests into a tests/phpunit directory.	2013-08-29 18:39:34 +00:00
formats.php	Move PHPUnit tests into a tests/phpunit directory.	2013-08-29 18:39:34 +00:00
gallery.php	Move PHPUnit tests into a tests/phpunit directory.	2013-08-29 18:39:34 +00:00
getPages.php	Eliminate use of extract() in wp_dropdown_pages().	2014-05-15 01:11:21 +00:00
listPages.php	Add unit tests for wp_list_pages().	2014-05-15 01:17:37 +00:00
meta.php	Move PHPUnit tests into a tests/phpunit directory.	2013-08-29 18:39:34 +00:00
nav-menu.php	Change the default orderby value in wp_get_nav_menus() to 'name'.	2014-09-29 15:44:26 +00:00
objects.php	Move PHPUnit tests into a tests/phpunit directory.	2013-08-29 18:39:34 +00:00
output.php	Move PHPUnit tests into a tests/phpunit directory.	2013-08-29 18:39:34 +00:00
query.php	Overhaul SQL generating logic in WP_Meta_Query to avoid unnecessary table joins.	2014-10-17 20:20:04 +00:00
revisions.php	This test in post/revisions.php is too misleading and doesn't work as expected since multiple queries can occur before the one that is intended for testing.	2014-07-02 19:56:50 +00:00
slashes.php	Move PHPUnit tests into a tests/phpunit directory.	2013-08-29 18:39:34 +00:00
template.php	Eliminate use of extract() in wp_dropdown_pages().	2014-05-15 01:11:21 +00:00
types.php	Move PHPUnit tests into a tests/phpunit directory.	2013-08-29 18:39:34 +00:00