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3097788f66
cases but actually did no such thing. Make it test some more cases than before (including things that didn't work in 6.5).
78 lines
2.2 KiB
SQL
78 lines
2.2 KiB
SQL
--
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-- SUBSELECT
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--
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SELECT 1 AS one WHERE 1 IN (SELECT 1);
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SELECT 1 AS zero WHERE 1 NOT IN (SELECT 1);
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SELECT 1 AS zero WHERE 1 IN (SELECT 2);
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-- Set up some simple test tables
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CREATE TABLE SUBSELECT_TBL (
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f1 integer,
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f2 integer,
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f3 float
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);
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INSERT INTO SUBSELECT_TBL VALUES (1, 2, 3);
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INSERT INTO SUBSELECT_TBL VALUES (2, 3, 4);
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INSERT INTO SUBSELECT_TBL VALUES (3, 4, 5);
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INSERT INTO SUBSELECT_TBL VALUES (1, 1, 1);
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INSERT INTO SUBSELECT_TBL VALUES (2, 2, 2);
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INSERT INTO SUBSELECT_TBL VALUES (3, 3, 3);
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INSERT INTO SUBSELECT_TBL VALUES (6, 7, 8);
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INSERT INTO SUBSELECT_TBL VALUES (8, 9, NULL);
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SELECT '' AS eight, * FROM SUBSELECT_TBL;
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-- Uncorrelated subselects
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SELECT '' AS two, f1 AS "Constant Select" FROM SUBSELECT_TBL
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WHERE f1 IN (SELECT 1);
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SELECT '' AS six, f1 AS "Uncorrelated Field" FROM SUBSELECT_TBL
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WHERE f1 IN (SELECT f2 FROM SUBSELECT_TBL);
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SELECT '' AS six, f1 AS "Uncorrelated Field" FROM SUBSELECT_TBL
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WHERE f1 IN (SELECT f2 FROM SUBSELECT_TBL WHERE
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f2 IN (SELECT f1 FROM SUBSELECT_TBL));
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SELECT '' AS three, f1, f2
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FROM SUBSELECT_TBL
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WHERE (f1, f2) NOT IN (SELECT f2, CAST(f3 AS int4) FROM SUBSELECT_TBL
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WHERE f3 IS NOT NULL);
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-- Correlated subselects
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SELECT '' AS six, f1 AS "Correlated Field", f2 AS "Second Field"
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FROM SUBSELECT_TBL upper
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WHERE f1 IN (SELECT f2 FROM SUBSELECT_TBL WHERE f1 = upper.f1);
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SELECT '' AS six, f1 AS "Correlated Field", f3 AS "Second Field"
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FROM SUBSELECT_TBL upper
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WHERE f1 IN
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(SELECT f2 FROM SUBSELECT_TBL WHERE CAST(upper.f2 AS float) = f3);
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SELECT '' AS six, f1 AS "Correlated Field", f3 AS "Second Field"
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FROM SUBSELECT_TBL upper
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WHERE f3 IN (SELECT upper.f1 + f2 FROM SUBSELECT_TBL
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WHERE f2 = CAST(f3 AS integer));
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SELECT '' AS five, f1 AS "Correlated Field"
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FROM SUBSELECT_TBL
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WHERE (f1, f2) IN (SELECT f2, CAST(f3 AS int4) FROM SUBSELECT_TBL
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WHERE f3 IS NOT NULL);
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--
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-- Use some existing tables in the regression test
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--
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SELECT '' AS eight, ss.f1 AS "Correlated Field", ss.f3 AS "Second Field"
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FROM SUBSELECT_TBL ss
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WHERE f1 NOT IN (SELECT f1+1 FROM INT4_TBL WHERE f1 != ss.f1);
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select q1, float8(count(*)) / (select count(*) from int8_tbl)
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from int8_tbl group by q1;
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