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

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;