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subselect regress test was kind of silly; it claimed to test correlation

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cases but actually did no such thing.  Make it test some more cases than
before (including things that didn't work in 6.5).
This commit is contained in:
Tom Lane 2000-03-23 07:42:13 +00:00
parent 5c63975504
commit 3097788f66
2 changed files with 63 additions and 41 deletions
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72
src/test/regress/expected/subselect.out
View File

@ -78,40 +78,60 @@ SELECT '' AS six, f1 AS "Uncorrelated Field" FROM SUBSELECT_TBL
| 3
(6 rows)
SELECT '' AS three, f1, f2
FROM SUBSELECT_TBL
WHERE (f1, f2) NOT IN (SELECT f2, CAST(f3 AS int4) FROM SUBSELECT_TBL
WHERE f3 IS NOT NULL);
three | f1 | f2
-------+----+----
| 1 | 2
| 6 | 7
| 8 | 9
(3 rows)
-- Correlated subselects
SELECT '' AS six, f1 AS "Correlated Field", f3 AS "Second Field"
FROM SUBSELECT_TBL
WHERE f1 IN (SELECT f2 FROM SUBSELECT_TBL WHERE f2 = f1);
SELECT '' AS six, f1 AS "Correlated Field", f2 AS "Second Field"
FROM SUBSELECT_TBL upper
WHERE f1 IN (SELECT f2 FROM SUBSELECT_TBL WHERE f1 = upper.f1);
six | Correlated Field | Second Field
-----+------------------+--------------
| 1 | 3
| 2 | 4
| 3 | 5
| 1 | 2
| 2 | 3
| 3 | 4
| 1 | 1
| 2 | 2
| 3 | 3
(6 rows)
SELECT '' AS six, f1 AS "Correlated Field", f3 AS "Second Field"
FROM SUBSELECT_TBL
WHERE f1 IN (SELECT f2 FROM SUBSELECT_TBL WHERE CAST(f2 AS float) = f3);
FROM SUBSELECT_TBL upper
WHERE f1 IN
(SELECT f2 FROM SUBSELECT_TBL WHERE CAST(upper.f2 AS float) = f3);
six | Correlated Field | Second Field
-----+------------------+--------------
| 1 | 3
| 2 | 4
| 3 | 5
| 1 | 1
| 2 | 2
| 3 | 3
(6 rows)
(5 rows)
SELECT '' AS six, f1 AS "Correlated Field", f3 AS "Second Field"
FROM SUBSELECT_TBL
WHERE f1 IN (SELECT f2 FROM SUBSELECT_TBL WHERE f2 = CAST(f3 AS integer));
ERROR: dtoi4: unable to convert null
FROM SUBSELECT_TBL upper
WHERE f3 IN (SELECT upper.f1 + f2 FROM SUBSELECT_TBL
WHERE f2 = CAST(f3 AS integer));
six | Correlated Field | Second Field
-----+------------------+--------------
| 1 | 3
| 2 | 4
| 3 | 5
| 6 | 8
(4 rows)
SELECT '' AS five, f1 AS "Correlated Field"
FROM SUBSELECT_TBL
WHERE (f1, f2) IN (SELECT f2, CAST(f3 AS int4) FROM SUBSELECT_TBL WHERE f3 IS NOT NULL);
WHERE (f1, f2) IN (SELECT f2, CAST(f3 AS int4) FROM SUBSELECT_TBL
WHERE f3 IS NOT NULL);
five | Correlated Field
------+------------------
| 2
@ -121,31 +141,27 @@ SELECT '' AS five, f1 AS "Correlated Field"
| 3
(5 rows)
SELECT '' AS three, f1 AS "Correlated Field"
FROM SUBSELECT_TBL
WHERE (f1, f2) NOT IN (SELECT f2, CAST(f3 AS int4) FROM SUBSELECT_TBL WHERE f3 IS NOT NULL);
three | Correlated Field
-------+------------------
| 1
| 6
| 8
(3 rows)
--
-- Use some existing tables in the regression test
--
SELECT '' AS eight, ss.f1 AS "Correlated Field", ss.f3 AS "Second Field"
FROM SUBSELECT_TBL ss
WHERE f1 NOT IN (SELECT f1 FROM INT4_TBL WHERE f1 != ss.f1);
WHERE f1 NOT IN (SELECT f1+1 FROM INT4_TBL WHERE f1 != ss.f1);
eight | Correlated Field | Second Field
-------+------------------+--------------
| 1 | 3
| 2 | 4
| 3 | 5
| 1 | 1
| 2 | 2
| 3 | 3
| 6 | 8
| 8 |
(8 rows)
(6 rows)
select q1, float8(count(*)) / (select count(*) from int8_tbl)
from int8_tbl group by q1;
q1 | ?column?
------------------+----------
123 | 0.4
4567890123456789 | 0.6
(2 rows)

32
src/test/regress/sql/subselect.sql
View File

@ -39,27 +39,31 @@ SELECT '' AS six, f1 AS "Uncorrelated Field" FROM SUBSELECT_TBL
WHERE f1 IN (SELECT f2 FROM SUBSELECT_TBL WHERE
f2 IN (SELECT f1 FROM SUBSELECT_TBL));
SELECT '' AS three, f1, f2
FROM SUBSELECT_TBL
WHERE (f1, f2) NOT IN (SELECT f2, CAST(f3 AS int4) FROM SUBSELECT_TBL
WHERE f3 IS NOT NULL);
-- Correlated subselects
SELECT '' AS six, f1 AS "Correlated Field", f3 AS "Second Field"
FROM SUBSELECT_TBL
WHERE f1 IN (SELECT f2 FROM SUBSELECT_TBL WHERE f2 = f1);
SELECT '' AS six, f1 AS "Correlated Field", f2 AS "Second Field"
FROM SUBSELECT_TBL upper
WHERE f1 IN (SELECT f2 FROM SUBSELECT_TBL WHERE f1 = upper.f1);
SELECT '' AS six, f1 AS "Correlated Field", f3 AS "Second Field"
FROM SUBSELECT_TBL
WHERE f1 IN (SELECT f2 FROM SUBSELECT_TBL WHERE CAST(f2 AS float) = f3);
FROM SUBSELECT_TBL upper
WHERE f1 IN
(SELECT f2 FROM SUBSELECT_TBL WHERE CAST(upper.f2 AS float) = f3);
SELECT '' AS six, f1 AS "Correlated Field", f3 AS "Second Field"
FROM SUBSELECT_TBL
WHERE f1 IN (SELECT f2 FROM SUBSELECT_TBL WHERE f2 = CAST(f3 AS integer));
FROM SUBSELECT_TBL upper
WHERE f3 IN (SELECT upper.f1 + f2 FROM SUBSELECT_TBL
WHERE f2 = CAST(f3 AS integer));
SELECT '' AS five, f1 AS "Correlated Field"
FROM SUBSELECT_TBL
WHERE (f1, f2) IN (SELECT f2, CAST(f3 AS int4) FROM SUBSELECT_TBL WHERE f3 IS NOT NULL);
SELECT '' AS three, f1 AS "Correlated Field"
FROM SUBSELECT_TBL
WHERE (f1, f2) NOT IN (SELECT f2, CAST(f3 AS int4) FROM SUBSELECT_TBL WHERE f3 IS NOT NULL);
WHERE (f1, f2) IN (SELECT f2, CAST(f3 AS int4) FROM SUBSELECT_TBL
WHERE f3 IS NOT NULL);
--
-- Use some existing tables in the regression test
@ -67,5 +71,7 @@ SELECT '' AS three, f1 AS "Correlated Field"
SELECT '' AS eight, ss.f1 AS "Correlated Field", ss.f3 AS "Second Field"
FROM SUBSELECT_TBL ss
WHERE f1 NOT IN (SELECT f1 FROM INT4_TBL WHERE f1 != ss.f1);
WHERE f1 NOT IN (SELECT f1+1 FROM INT4_TBL WHERE f1 != ss.f1);
select q1, float8(count(*)) / (select count(*) from int8_tbl)
from int8_tbl group by q1;