Merge sanja.is.com.ua:/home/bell/mysql/bk/mysql-4.1

into sanja.is.com.ua:/home/bell/mysql/bk/work-4.1

mysql-test/r/subselect.result

@@ -1899,3 +1899,24 @@ select t000.a, count(*) `C` FROM t1 t000 GROUP BY t000.a HAVING count(*) > ALL (
 a	C
 1	1
 drop table t1,t2;
+CREATE TABLE `t1` ( `aid` int(11) NOT NULL default '0', `bid` int(11) NOT NULL default '0', PRIMARY KEY  (`aid`,`bid`));
+CREATE TABLE `t2` ( `aid` int(11) NOT NULL default '0', `bid` int(11) NOT NULL default '0', PRIMARY KEY  (`aid`,`bid`));
+insert into t1 values (1,1),(1,2),(2,1),(2,2);
+insert into t2 values (1,2),(2,2);
+select * from t1 where t1.aid not in (select aid from t2 where bid=t1.bid);
+aid	bid
+1	1
+2	1
+alter table t2 drop primary key;
+alter table t2 add key KEY1 (aid, bid);
+select * from t1 where t1.aid not in (select aid from t2 where bid=t1.bid);
+aid	bid
+1	1
+2	1
+alter table t2 drop key KEY1;
+alter table t2 add primary key (bid, aid);
+select * from t1 where t1.aid not in (select aid from t2 where bid=t1.bid);
+aid	bid
+1	1
+2	1
+drop table t1,t2;

mysql-test/t/subselect.test

@@ -1222,3 +1222,19 @@ CREATE TABLE `t2` ( `b` int(11) default NULL, `a` int(11) default NULL) ENGINE=M
 insert into t2 values (1,2);
 select t000.a, count(*) `C` FROM t1 t000 GROUP BY t000.a HAVING count(*) > ALL (SELECT count(*) FROM t2 t001 WHERE t001.a=1);
 drop table t1,t2;
+
+#
+# Optimized IN with compound index
+#
+CREATE TABLE `t1` ( `aid` int(11) NOT NULL default '0', `bid` int(11) NOT NULL default '0', PRIMARY KEY  (`aid`,`bid`));
+CREATE TABLE `t2` ( `aid` int(11) NOT NULL default '0', `bid` int(11) NOT NULL default '0', PRIMARY KEY  (`aid`,`bid`));
+insert into t1 values (1,1),(1,2),(2,1),(2,2);
+insert into t2 values (1,2),(2,2);
+select * from t1 where t1.aid not in (select aid from t2 where bid=t1.bid);
+alter table t2 drop primary key;
+alter table t2 add key KEY1 (aid, bid);
+select * from t1 where t1.aid not in (select aid from t2 where bid=t1.bid);
+alter table t2 drop key KEY1;
+alter table t2 add primary key (bid, aid);
+select * from t1 where t1.aid not in (select aid from t2 where bid=t1.bid);
+drop table t1,t2;

sql/item_subselect.cc

@@ -1243,13 +1243,15 @@ int subselect_uniquesubquery_engine::exec()
   DBUG_ENTER("subselect_uniquesubquery_engine::exec");
   int error;
   TABLE *table= tab->table;
-  if ((tab->ref.key_err= (*tab->ref.key_copy)->copy()))
+  for (store_key **copy=tab->ref.key_copy ; *copy ; copy++)
+  {
+    if (tab->ref.key_err= (*copy)->copy())
     {
       table->status= STATUS_NOT_FOUND;
-    error= -1;
+      DBUG_RETURN(1);
     }
-  else
-  {
+  }
+
   if (!table->file->inited)
     table->file->ha_index_init(tab->ref.key);
   error= table->file->index_read(table->record[0],
@@ -1265,7 +1267,7 @@ int subselect_uniquesubquery_engine::exec()
                                           (!cond || cond->val_int()) ? 1 :
                                           0);
   }
-  }
+
   DBUG_RETURN(error != 0);
 }
 
@@ -1293,13 +1295,15 @@ int subselect_indexsubquery_engine::exec()
     ((Item_in_subselect *) item)->was_null= 0;
   }
 
-  if ((*tab->ref.key_copy) && (tab->ref.key_err= (*tab->ref.key_copy)->copy()))
+  for (store_key **copy=tab->ref.key_copy ; *copy ; copy++)
+  {
+    if (tab->ref.key_err= (*copy)->copy())
     {
       table->status= STATUS_NOT_FOUND;
-    error= -1;
+      DBUG_RETURN(1);
     }
-  else
-  {
+  }
+
   if (!table->file->inited)
     table->file->ha_index_init(tab->ref.key);
   error= table->file->index_read(table->record[0],
@@ -1344,7 +1348,6 @@ int subselect_indexsubquery_engine::exec()
       }
     }
   }
-  }
   DBUG_RETURN(error != 0);
 }