Ticket #20263: 20263.diff

src/wp-admin/includes/upgrade.php

@@ -1897 +1897 @@
                         if (array_key_exists(strtolower($tablefield->Field), $cfields)) {
 
                                 // Get the field type from the query.
-                                preg_match("|".$tablefield->Field." ([^ ]*( unsigned)?)|i", $cfields[strtolower($tablefield->Field)], $matches);
+                                $parts = explode( $tablefield->Field, $cfields[ $tablefield->Field ], 2 );
+                                $remainder = ltrim( $parts[1], ' `' );
+
+                                preg_match( '/([^ ]+( unsigned)?)/i', $remainder, $matches );
+
                                 $fieldtype = $matches[1];
 
                                 // Is actual field type different from the field type in query?