Ticket #31071: 31071-fix-wp_enqueue_media-performance.patch

src/wp-admin/includes/schema.php

@@ -187 +187 @@
   KEY post_name (post_name($max_index_length)),
   KEY type_status_date (post_type,post_status,post_date,ID),
   KEY post_parent (post_parent),
-  KEY post_author (post_author)
+  KEY post_author (post_author),
+  KEY post_type_mime_type (post_type, post_mime_type(10))
 ) $charset_collate;\n";
 
         // Single site users table. The multisite flavor of the users table is handled below.

src/wp-includes/media.php

@@ -3213 +3213 @@
         " );
         $months = $wpdb->get_results( $wpdb->prepare( "
                 SELECT DISTINCT YEAR( post_date ) AS year, MONTH( post_date ) AS month
-                FROM $wpdb->posts
+                FROM $wpdb->posts IGNORE INDEX (post_type_mime_type)
                 WHERE post_type = %s
                 ORDER BY post_date DESC
         ", 'attachment' ) );

src/wp-includes/version.php

@@ -11 +11 @@
  *
  * @global int $wp_db_version
  */
-$wp_db_version = 35700;
+$wp_db_version = 35769;
 
 /**
  * Holds the TinyMCE version