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Postgres FD Implementation
Commit 86bc1da2 authored by Tom Lane's avatar Tom Lane
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Update regress test for CASE to enable tests involving joins.

parent ec1f5f78
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Showing with 105 additions and 65 deletions
src/test/regress/expected/case.out
View file @ 86bc1da2
......@@ -67,28 +67,28 @@ One|Two WHEN with default
QUERY: SELECT '' AS "Five",
CASE
WHEN i >= 0 THEN i
END AS ">= 0 or Null"
WHEN i >= 3 THEN i
END AS ">= 3 or Null"
FROM CASE_TBL;
Five|>= 0 or Null
Five|>= 3 or Null
----+------------
| 1
| 2
|
|
| 3
| 4
(4 rows)
QUERY: SELECT '' AS "Five",
CASE WHEN i >= 0 THEN (i - i)
CASE WHEN i >= 3 THEN (i + i)
ELSE i
END AS "Simplest Math"
FROM CASE_TBL;
Five|Simplest Math
----+-------------
| 0
| 0
| 0
| 0
| 1
| 2
| 6
| 8
(4 rows)
QUERY: SELECT '' AS "Five", i AS "Value",
......@@ -107,8 +107,7 @@ Five|Value|Category
| 4|big
(4 rows)
QUERY: /*
SELECT '' AS "Five",
QUERY: SELECT '' AS "Five",
CASE WHEN ((i < 0) or (i < 0)) THEN 'small'
WHEN ((i = 0) or (i = 0)) THEN 'zero'
WHEN ((i = 1) or (i = 1)) THEN 'one'
......@@ -116,8 +115,15 @@ SELECT '' AS "Five",
ELSE 'big'
END AS "Category"
FROM CASE_TBL;
*/
SELECT * FROM CASE_TBL WHERE COALESCE(f,i) = 4;
Five|Category
----+--------
|one
|two
|big
|big
(4 rows)
QUERY: SELECT * FROM CASE_TBL WHERE COALESCE(f,i) = 4;
i|f
-+-
4|
......@@ -128,33 +134,77 @@ i|f
-+-
(0 rows)
QUERY: /*
This crashes the backend at the moment...
- thomas 1998-12-12
SELECT COALESCE(a.i, a.f, b.i, b.j)
QUERY: SELECT COALESCE(a.f, b.i, b.j)
FROM CASE_TBL a, CASE2_TBL b;
*/
SELECT *
case
-----
10.1
20.2
-30.3
1
10.1
20.2
-30.3
2
10.1
20.2
-30.3
3
10.1
20.2
-30.3
2
10.1
20.2
-30.3
1
10.1
20.2
-30.3
-6
(24 rows)
QUERY: SELECT *
FROM CASE_TBL a, CASE2_TBL b
WHERE COALESCE(a.i, a.f, b.i, b.j) = 4;
WHERE COALESCE(a.f, b.i, b.j) = 2;
i|f|i| j
-+-+-+--
4| |1|-1
4| |2|-2
4| |3|-3
4| |2|-4
4| |1|
4| | |-6
(6 rows)
QUERY: /*
This crashes the backend at the moment...
- thomas 1998-12-12
SELECT '' AS Five, NULLIF(a.i,b.i) AS "NULLIF(a.i,b.i)",
(2 rows)
QUERY: SELECT '' AS Five, NULLIF(a.i,b.i) AS "NULLIF(a.i,b.i)",
NULLIF(b.i, 4) AS "NULLIF(b.i,4)"
FROM CASE_TBL a, CASE2_TBL b;
*/
SELECT '' AS "Two", *
five|NULLIF(a.i,b.i)|NULLIF(b.i,4)
----+---------------+-------------
| | 1
| 2| 1
| 3| 1
| 4| 1
| 1| 2
| | 2
| 3| 2
| 4| 2
| 1| 3
| 2| 3
| | 3
| 4| 3
| 1| 2
| | 2
| 3| 2
| 4| 2
| | 1
| 2| 1
| 3| 1
| 4| 1
| 1|
| 2|
| 3|
| 4|
(24 rows)
QUERY: SELECT '' AS "Two", *
FROM CASE_TBL a, CASE2_TBL b
WHERE COALESCE(f,b.i) = 2;
Two|i|f|i| j
......@@ -164,13 +214,13 @@ Two|i|f|i| j
(2 rows)
QUERY: UPDATE CASE_TBL
SET i = CASE WHEN i >= 0 THEN (- i)
SET i = CASE WHEN i >= 3 THEN (- i)
ELSE (2 * i) END;
QUERY: SELECT * FROM CASE_TBL;
i| f
--+-----
-1| 10.1
-2| 20.2
2| 10.1
4| 20.2
-3|-30.3
-4|
(4 rows)
......@@ -181,21 +231,25 @@ QUERY: UPDATE CASE_TBL
QUERY: SELECT * FROM CASE_TBL;
i| f
---+-----
-3| 10.1
-6| 20.2
4| 10.1
8| 20.2
-9|-30.3
-12|
(4 rows)
QUERY: /*
This crashes the backend at the moment...
- thomas 1998-12-12
UPDATE CASE_TBL
QUERY: UPDATE CASE_TBL
SET i = CASE WHEN b.i >= 2 THEN (2 * j)
ELSE (3 * j) END
FROM CASE2_TBL b
WHERE j = -CASE_TBL.i;
SELECT * FROM CASE_TBL;
*/
DROP TABLE CASE_TBL;
QUERY: SELECT * FROM CASE_TBL;
i| f
---+-----
8| 20.2
-9|-30.3
-12|
-8| 10.1
(4 rows)
QUERY: DROP TABLE CASE_TBL;
QUERY: DROP TABLE CASE2_TBL;
src/test/regress/sql/case.sql
View file @ 86bc1da2
......@@ -65,12 +65,12 @@ SELECT '6' AS "One",
SELECT '' AS "Five",
CASE
WHEN i >= 0 THEN i
END AS ">= 0 or Null"
WHEN i >= 3 THEN i
END AS ">= 3 or Null"
FROM CASE_TBL;
SELECT '' AS "Five",
CASE WHEN i >= 0 THEN (i - i)
CASE WHEN i >= 3 THEN (i + i)
ELSE i
END AS "Simplest Math"
FROM CASE_TBL;
......@@ -84,7 +84,6 @@ SELECT '' AS "Five", i AS "Value",
END AS "Category"
FROM CASE_TBL;
/*
SELECT '' AS "Five",
CASE WHEN ((i < 0) or (i < 0)) THEN 'small'
WHEN ((i = 0) or (i = 0)) THEN 'zero'
......@@ -93,7 +92,6 @@ SELECT '' AS "Five",
ELSE 'big'
END AS "Category"
FROM CASE_TBL;
*/
--
-- Examples of qualifications involving tables
......@@ -109,24 +107,16 @@ SELECT * FROM CASE_TBL WHERE COALESCE(f,i) = 4;
SELECT * FROM CASE_TBL WHERE NULLIF(f,i) = 2;
/*
This crashes the backend at the moment...
- thomas 1998-12-12
SELECT COALESCE(a.i, a.f, b.i, b.j)
SELECT COALESCE(a.f, b.i, b.j)
FROM CASE_TBL a, CASE2_TBL b;
*/
SELECT *
FROM CASE_TBL a, CASE2_TBL b
WHERE COALESCE(a.i, a.f, b.i, b.j) = 4;
WHERE COALESCE(a.f, b.i, b.j) = 2;
/*
This crashes the backend at the moment...
- thomas 1998-12-12
SELECT '' AS Five, NULLIF(a.i,b.i) AS "NULLIF(a.i,b.i)",
NULLIF(b.i, 4) AS "NULLIF(b.i,4)"
FROM CASE_TBL a, CASE2_TBL b;
*/
SELECT '' AS "Two", *
FROM CASE_TBL a, CASE2_TBL b
......@@ -137,7 +127,7 @@ SELECT '' AS "Two", *
--
UPDATE CASE_TBL
SET i = CASE WHEN i >= 0 THEN (- i)
SET i = CASE WHEN i >= 3 THEN (- i)
ELSE (2 * i) END;
SELECT * FROM CASE_TBL;
......@@ -148,9 +138,6 @@ UPDATE CASE_TBL
SELECT * FROM CASE_TBL;
/*
This crashes the backend at the moment...
- thomas 1998-12-12
UPDATE CASE_TBL
SET i = CASE WHEN b.i >= 2 THEN (2 * j)
ELSE (3 * j) END
......@@ -158,7 +145,6 @@ UPDATE CASE_TBL
WHERE j = -CASE_TBL.i;
SELECT * FROM CASE_TBL;
*/
--
-- Clean up
......
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