Ticket #20316: 20316.3.diff

src/wp-admin/includes/schema.php

@@ -546 +546 @@
 
         // delete obsolete magpie stuff
         $wpdb->query("DELETE FROM $wpdb->options WHERE option_name REGEXP '^rss_[0-9a-f]{32}(_ts)?$'");
-        // clear transient data
-        $wpdb->query( "DELETE FROM $wpdb->options WHERE option_name LIKE '\_transient\_%' OR option_name LIKE '\_site\_transient\_%'" );
+
+        // Deletes all non-expiring transients, and expired transients.
+        // The multi-table delete syntax is used to delete transient record from table a,
+        // and the corresponding transient_timeout record (if any) from table b.
+        $time = time();
+        $wpdb->query("DELETE a, b FROM $wpdb->options a, $wpdb->options b WHERE
+                a.option_name LIKE '\_transient\_%' AND
+                a.option_name NOT LIKE '\_transient\_timeout\_%' AND
+                b.option_name = CONCAT( '_transient_timeout_', SUBSTRING( a.option_name, 12 ) )
+                AND b.option_value < $time");
+
+        if ( is_main_site() && is_main_network() ) {
+                $wpdb->query("DELETE a, b FROM $wpdb->options a, $wpdb->options b WHERE
+                        a.option_name LIKE '\_site\_transient\_%' AND
+                        a.option_name NOT LIKE '\_site\_transient\_timeout\_%' AND
+                        b.option_name = CONCAT( '_site_transient_timeout_', SUBSTRING( a.option_name, 17 ) )
+                        AND b.option_value < $time");
+    }
 }
 
 /**

src/wp-admin/includes/upgrade.php

@@ -1229 +1229 @@
  */
 function upgrade_network() {
         global $wp_current_db_version, $wpdb;
+
+        // Always
+        if ( is_main_network() ) {
+                // Deletes all non-expiring transients, and expired transients.
+                // The multi-table delete syntax is used to delete transient record from table a,
+                // and the corresponding transient_timeout record (if any) from table b.
+                $time = time();
+                $wpdb->query("DELETE a, b FROM $wpdb->sitemeta a, $wpdb->sitemeta b WHERE
+                        a.meta_key LIKE '\_site\_transient\_%' AND
+                        a.meta_key NOT LIKE '\_site\_transient\_timeout\_%' AND
+                        b.meta_key = CONCAT( '_site_transient_timeout_', SUBSTRING( a.meta_key, 17 ) )
+                        AND b.meta_value < $time");
+        }
+
         // 2.8
         if ( $wp_current_db_version < 11549 ) {
                 $wpmu_sitewide_plugins = get_site_option( 'wpmu_sitewide_plugins' );