fixed invalidation of query cache

excluded double call of 'invalidate()'

mysql-test/r/innodb_cache.result

@@ -98,3 +98,13 @@ commit;
 show status like "Qcache_queries_in_cache";
 Variable_name	Value
 Qcache_queries_in_cache	1
+drop table if exists t1;
+CREATE TABLE t1 (id int(11) NOT NULL auto_increment, PRIMARY KEY  (id)) TYPE=InnoDB;
+select count(*) from t1;
+count(*)
+0
+insert into t1 (id) values (0);
+select count(*) from t1;
+count(*)
+1
+drop table t1;

mysql-test/t/innodb_cache.test

@@ -48,3 +48,10 @@ show status like "Qcache_queries_in_cache";
 show status like "Qcache_hits";
 commit;
 show status like "Qcache_queries_in_cache";
+
+drop table if exists t1;
+CREATE TABLE t1 (id int(11) NOT NULL auto_increment, PRIMARY KEY  (id)) TYPE=InnoDB;
+select count(*) from t1;
+insert into t1 (id) values (0);
+select count(*) from t1;
+drop table t1;

sql/handler.cc

@@ -314,7 +314,7 @@ int ha_commit_trans(THD *thd, THD_TRANS* trans)
     }
 #endif
 #ifdef HAVE_QUERY_CACHE
-    if (transaction_commited)
+    if (transaction_commited && thd->transaction.changed_tables)
       query_cache.invalidate(thd->transaction.changed_tables);
 #endif /*HAVE_QUERY_CACHE*/
     if (error && trans == &thd->transaction.all && mysql_bin_log.is_open())

sql/sql_delete.cc

@@ -179,14 +179,12 @@ cleanup:
     if (ha_autocommit_or_rollback(thd,error >= 0))
       error=1;
   }
+
   /*
-    Only invalidate the query cache if something changed or if we
-    didn't commit the transacion (query cache is automaticly
-    invalidated on commit)
+    Store table for future invalidation  or invalidate it in
+    the query cache if something changed
   */
-  if (deleted &&
-      (!transactional_table ||
-       thd->options & (OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)))
+  if (deleted)
   {
     query_cache_invalidate3(thd, table_list, 1);
   }

sql/sql_insert.cc

@@ -319,13 +319,10 @@ int mysql_insert(THD *thd,TABLE_LIST *table_list, List<Item> &fields,
       error=ha_autocommit_or_rollback(thd,error);
 
     /*
-      Only invalidate the query cache if something changed or if we
-      didn't commit the transacion (query cache is automaticly
-      invalidated on commit)
+      Store table for future invalidation  or invalidate it in
+      the query cache if something changed
     */
-    if ((info.copied || info.deleted) &&
-	(!transactional_table ||
-	 thd->options & (OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)))
+    if (info.copied || info.deleted)
     {
       query_cache_invalidate3(thd, table_list, 1);
     }

sql/sql_update.cc

@@ -318,14 +318,12 @@ int mysql_update(THD *thd,
     if (ha_autocommit_or_rollback(thd, error >= 0))
       error=1;
   }
+
   /*
-    Only invalidate the query cache if something changed or if we
-    didn't commit the transacion (query cache is automaticly
-    invalidated on commit)
+    Store table for future invalidation  or invalidate it in
+    the query cache if something changed
   */
-  if (updated &&
-      (!transactional_table ||
-       thd->options & (OPTION_NOT_AUTOCOMMIT | OPTION_BEGIN)))
+  if (updated)
   {
     query_cache_invalidate3(thd, table_list, 1);
   }