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2026-03-12 20:23:15

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2026-03-12 21:23:47 +01:00
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tpt/ast/test_index_coalesce_candidate.sql Normal file
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-- 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 tcoal;
DROP SEQUENCE scoal;
CREATE TABLE tcoal (id NUMBER, a VARCHAR2(100), b VARCHAR2(100)) TABLESPACE users;
CREATE INDEX icoal1 ON tcoal(id) TABLESPACE users;
CREATE INDEX icoal2 ON tcoal(id,a) TABLESPACE users;
CREATE INDEX icoal3 ON tcoal(b) TABLESPACE users;
CREATE SEQUENCE scoal CACHE 10000;
BEGIN FOR i IN 1..100 LOOP
INSERT INTO tcoal SELECT scoal.NEXTVAL, DBMS_RANDOM.STRING('a', 20), DBMS_RANDOM.STRING('a', 20)
FROM dual CONNECT BY LEVEL <= 10000;
COMMIT;
DBMS_STATS.GATHER_INDEX_STATS(user, 'ICOAL1');
DBMS_STATS.GATHER_INDEX_STATS(user, 'ICOAL2');
DBMS_STATS.GATHER_INDEX_STATS(user, 'ICOAL3');
END LOOP; END;
/
BEGIN FOR i in 1..100 LOOP
DELETE FROM tcoal WHERE MOD(id,100)!=0 AND rownum <= 10000;
INSERT INTO tcoal SELECT scoal.NEXTVAL, DBMS_RANDOM.STRING('a', 20), DBMS_RANDOM.STRING('a', 20)
FROM dual CONNECT BY LEVEL <= 10000;
DBMS_STATS.GATHER_INDEX_STATS(user, 'ICOAL1');
DBMS_STATS.GATHER_INDEX_STATS(user, 'ICOAL2');
DBMS_STATS.GATHER_INDEX_STATS(user, 'ICOAL3');
END LOOP; END;
/