2026-03-12 20:23:15

tpt/ast/02_join_nested_loops.sql

@@ -0,0 +1,73 @@
+-- Copyright 2018 Tanel Poder. All rights reserved. More info at http://tanelpoder.com
+-- Licensed under the Apache License, Version 2.0. See LICENSE.txt for terms & conditions.
+
+set echo on
+
+select 
+    t.owner, t.created, i.last_ddl_time
+from 
+    test_objects    t
+  , indexed_objects i
+where 
+    t.object_id = i.object_id 
+and t.owner = 'SH'  
+and t.object_name like 'S%'
+/
+
+@xall
+
+
+select /*+ LEADING(t,i) USE_NL(i) */
+    t.owner, t.created, i.last_ddl_time
+from 
+    test_objects    t
+  , indexed_objects i
+where 
+    t.object_id = i.object_id 
+and t.owner = 'SH'  
+and t.object_name like 'S%'
+/
+
+@xall
+
+
+select /*+ LEADING(t,i) USE_NL(i) NO_NLJ_PREFETCH(i) */
+    t.owner, t.created, i.last_ddl_time
+from 
+    test_objects    t
+  , indexed_objects i
+where 
+    t.object_id = i.object_id 
+and t.owner = 'SH'  
+and t.object_name like 'S%'
+/
+
+@xall
+
+select /*+ LEADING(t,i) USE_NL(i) NO_NLJ_BATCHING(i) */
+    t.owner, t.created, i.last_ddl_time
+from 
+    test_objects    t
+  , indexed_objects i
+where 
+    t.object_id = i.object_id 
+and t.owner = 'SH'  
+and t.object_name like 'S%'
+/
+
+@xall
+
+select /*+ LEADING(t,i) USE_NL(i) NO_NLJ_PREFETCH(t) NO_NLJ_PREFETCH(i) NO_NLJ_BATCHING(t) NO_NLJ_BATCHING(i) */
+    t.owner, t.created, i.last_ddl_time
+from 
+    test_objects    t
+  , indexed_objects i
+where 
+    t.object_id = i.object_id 
+and t.owner = 'SH'  
+and t.object_name like 'S%'
+/
+
+@xall
+
+set echo off