Users: Ensure user counts remain accurate if users are added to or removed from the `users` table without corresponding `usermeta` entries being added or removed.

This has a slight performance impact on sites with a large number of users when the `time` strategy is used for counting users. Hopefully this impact will be negated by enhancements proposed in #38741.

Props psoluch, dots, boonebgorges, ptbello, tharsheblows

Fixes #29785

Built from https://develop.svn.wordpress.org/trunk@40560


git-svn-id: http://core.svn.wordpress.org/trunk@40429 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
John Blackbourn 2017-04-30 13:03:41 +00:00
parent 224b88ca42
commit eb4db0e19c
2 changed files with 13 additions and 3 deletions

View File

@ -857,7 +857,12 @@ function count_users($strategy = 'time') {
$select_count = implode(', ', $select_count);
// Add the meta_value index to the selection list, then run the query.
$row = $wpdb->get_row( "SELECT $select_count, COUNT(*) FROM $wpdb->usermeta WHERE meta_key = '{$blog_prefix}capabilities'", ARRAY_N );
$row = $wpdb->get_row( "
SELECT {$select_count}, COUNT(*)
FROM {$wpdb->usermeta}
INNER JOIN {$wpdb->users} ON user_id = ID
WHERE meta_key = '{$blog_prefix}capabilities'
", ARRAY_N );
// Run the previous loop again to associate results with role names.
$col = 0;
@ -881,7 +886,12 @@ function count_users($strategy = 'time') {
'none' => 0,
);
$users_of_blog = $wpdb->get_col( "SELECT meta_value FROM $wpdb->usermeta WHERE meta_key = '{$blog_prefix}capabilities'" );
$users_of_blog = $wpdb->get_col( "
SELECT meta_value
FROM {$wpdb->usermeta}
INNER JOIN {$wpdb->users} ON user_id = ID
WHERE meta_key = '{$blog_prefix}capabilities'
" );
foreach ( $users_of_blog as $caps_meta ) {
$b_roles = maybe_unserialize($caps_meta);

View File

@ -4,7 +4,7 @@
*
* @global string $wp_version
*/
$wp_version = '4.8-alpha-40559';
$wp_version = '4.8-alpha-40560';
/**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.