2026-03-12 20:23:15

tpt/ast/03_index_skip_scan.sql

@@ -0,0 +1,22 @@
+-- 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.
+
+DROP TABLE t;
+CREATE TABLE t AS SELECT * FROM dba_objects;
+CREATE INDEX i1 ON t(MOD(object_id,4), object_id);
+@gts t
+
+SELECT /*+ INDEX_SS(t) */ * FROM t WHERE object_id = 12345;
+@x
+
+CREATE INDEX i2 ON t(MOD(SYS_CONTEXT('USERENV','SID'),4), object_id);
+SELECT /*+ INDEX_SS(t) */ * FROM t WHERE object_id = 12345;
+@x
+
+ALTER TABLE t ADD x NUMBER NULL;
+ALTER TABLE t MODIFY x DEFAULT MOD(SYS_CONTEXT('USERENV','SID'),16);
+
+CREATE INDEX i3 ON t(x,object_id);
+SELECT * FROM t WHERE object_id = 12345;
+@x
+