23 lines
678 B
MySQL
23 lines
678 B
MySQL
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-- Copyright 2018 Tanel Poder. All rights reserved. More info at http://tanelpoder.com
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-- Licensed under the Apache License, Version 2.0. See LICENSE.txt for terms & conditions.
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DROP TABLE t;
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CREATE TABLE t AS SELECT * FROM dba_objects;
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CREATE INDEX i1 ON t(MOD(object_id,4), object_id);
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@gts t
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SELECT /*+ INDEX_SS(t) */ * FROM t WHERE object_id = 12345;
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@x
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CREATE INDEX i2 ON t(MOD(SYS_CONTEXT('USERENV','SID'),4), object_id);
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SELECT /*+ INDEX_SS(t) */ * FROM t WHERE object_id = 12345;
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@x
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ALTER TABLE t ADD x NUMBER NULL;
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ALTER TABLE t MODIFY x DEFAULT MOD(SYS_CONTEXT('USERENV','SID'),16);
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CREATE INDEX i3 ON t(x,object_id);
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SELECT * FROM t WHERE object_id = 12345;
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@x
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