2026-03-12 20:23:15

tpt/ast/02_leading_sq.sql

@@ -0,0 +1,25 @@
+-- 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.
+
+select 
+/*+
+  no_unnest(@my_sub)
+  leading  (@my_sub emp_inner@my_sub)
+  use_merge (@my_sub dept_inner@my_sub)
+*/
+   *
+from 
+   scott.emp emp_outer
+where 
+   emp_outer.deptno in (
+       select /*+ qb_name(my_sub) */
+           dept_inner.deptno
+       from 
+           scott.dept dept_inner
+         , scott.emp  emp_inner
+       where 
+           dept_inner.dname like 'S%'
+       and emp_inner.ename   = dept_inner.dname
+       and dept_inner.deptno = emp_outer.deptno
+   )
+/