Index: /typo3_svn/t3lib/class.t3lib_db.php
===================================================================
--- /typo3_svn/t3lib/class.t3lib_db.php	(revision 3164)
+++ /typo3_svn/t3lib/class.t3lib_db.php	(working copy)
@@ -1176,13 +1176,15 @@
 		$indices_output = array();
 		if ($explain_output[0]['rows']>1 || t3lib_div::inList('ALL',$explain_output[0]['type'])) {
 			$debug = true;	// only enable output if it's really useful
-
-			$res = $this->sql_query('SHOW INDEX FROM '.$from_table, $this->link);
-			if (is_resource($res)) {
-				while ($tempRow = $this->sql_fetch_assoc($res)) {
-					$indices_output[] = $tempRow;
+			
+			foreach (split(',',$from_table) as $oneTable) {
+				$res = $this->sql_query('SHOW INDEX FROM '.$oneTable, $this->link);
+				if (is_resource($res)) {
+					while ($tempRow = $this->sql_fetch_assoc($res)) {
+						$indices_output[] = $tempRow;
+					}
+					$this->sql_free_result($res);
 				}
-				$this->sql_free_result($res);
 			}
 		} else {
 			$debug = false;