Fix for MySQL 4.0

diff --git a/maintenance/storage/fixBug20757.php b/maintenance/storage/fixBug20757.php
index 922d472..694c501 100644 (file)
--- a/maintenance/storage/fixBug20757.php
+++ b/maintenance/storage/fixBug20757.php
@@ -31,6 +31,16 @@ class FixBug20757 extends Maintenance {
 
                $totalRevs = $dbr->selectField( 'text', 'MAX(old_id)', false, __METHOD__ );
 
+               if ( $dbr->getType() == 'mysql' 
+                       && version_compare( $dbr->getServerVersion(), '4.1.0', '>=' ) )
+               {
+                       // In MySQL 4.1+, the binary field old_text has a non-working LOWER() function
+                       $lowerLeft = 'LOWER(CONVERT(LEFT(old_text,22) USING latin1))';
+               } else {
+                       // No CONVERT() in MySQL 4.0
+                       $lowerLeft = 'LOWER(LEFT(old_text,22))';
+               }
+
                while ( true ) {
                        print "ID: $startId / $totalRevs\r";
 
@@ -40,7 +50,7 @@ class FixBug20757 extends Maintenance {
                                array( 
                                        'old_id > ' . intval( $startId ),
                                        'old_flags LIKE \'%object%\' AND old_flags NOT LIKE \'%external%\'',
-                                       'LOWER(CONVERT(LEFT(old_text,22) USING latin1)) = \'o:15:"historyblobstub"\'',
+                                       "$lowerLeft = 'o:15:\"historyblobstub\"'",
                                ),
                                __METHOD__,
                                array(