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Commit 4335a37

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Thomas G. Lockhart
committed
Add many new test cases.
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-80
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2 files changed

+278
-80
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‎src/test/regress/expected/case.out

Lines changed: 160 additions & 53 deletions
Original file line numberDiff line numberDiff line change
@@ -1,94 +1,201 @@
1-
QUERY: SELECT '' AS "One",
1+
QUERY: CREATE TABLE CASE_TBL (
2+
i integer,
3+
f double precision
4+
);
5+
QUERY: CREATE TABLE CASE2_TBL (
6+
i integer,
7+
j integer
8+
);
9+
QUERY: INSERT INTO CASE_TBL VALUES (1, 10.1);
10+
QUERY: INSERT INTO CASE_TBL VALUES (2, 20.2);
11+
QUERY: INSERT INTO CASE_TBL VALUES (3, -30.3);
12+
QUERY: INSERT INTO CASE_TBL VALUES (4, NULL);
13+
QUERY: INSERT INTO CASE2_TBL VALUES (1, -1);
14+
QUERY: INSERT INTO CASE2_TBL VALUES (2, -2);
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QUERY: INSERT INTO CASE2_TBL VALUES (3, -3);
16+
QUERY: INSERT INTO CASE2_TBL VALUES (2, -4);
17+
QUERY: INSERT INTO CASE2_TBL VALUES (1, NULL);
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QUERY: INSERT INTO CASE2_TBL VALUES (NULL, -6);
19+
QUERY: SELECT '3' AS "One",
220
CASE
321
WHEN 1 < 2 THEN 3
4-
END AS "One only = 3";
5-
One|One only = 3
6-
---+------------
7-
| 3
22+
END AS "Simple WHEN";
23+
One|Simple WHEN
24+
---+-----------
25+
3| 3
826
(1 row)
927

10-
QUERY: SELECT '' AS "One",
28+
QUERY: SELECT '<NULL>' AS "One",
1129
CASE
1230
WHEN 1 > 2 THEN 3
13-
END AS "One only = Null";
14-
One|One only = Null
15-
---+---------------
16-
|
31+
END AS "Simple default";
32+
One |Simple default
33+
------+--------------
34+
<NULL>|
1735
(1 row)
1836

19-
QUERY: SELECT '' AS "One",
37+
QUERY: SELECT '3' AS "One",
2038
CASE
2139
WHEN 1 < 2 THEN 3
2240
ELSE 4
23-
END AS "One with default = 3";
24-
One|One with default = 3
25-
---+--------------------
26-
| 3
41+
END AS "Simple ELSE";
42+
One|Simple ELSE
43+
---+-----------
44+
3| 3
2745
(1 row)
2846

29-
QUERY: SELECT '' AS "One",
47+
QUERY: SELECT '4' AS "One",
3048
CASE
3149
WHEN 1 > 2 THEN 3
3250
ELSE 4
33-
END AS "One with default = 4";
34-
One|One with default = 4
35-
---+--------------------
36-
| 4
51+
END AS "ELSE default";
52+
One|ELSE default
53+
---+------------
54+
4| 4
3755
(1 row)
3856

39-
QUERY: SELECT '' AS "One",
57+
QUERY: SELECT '6' AS "One",
4058
CASE
4159
WHEN 1 > 2 THEN 3
4260
WHEN 4 < 5 THEN 6
4361
ELSE 7
44-
END AS "Two with default = 6";
45-
One|Two with default = 6
46-
---+--------------------
47-
| 6
62+
END AS "Two WHEN with default";
63+
One|Two WHEN with default
64+
---+---------------------
65+
6| 6
4866
(1 row)
4967

5068
QUERY: SELECT '' AS "Five",
5169
CASE
52-
WHEN f1 >= 0 THEN f1
70+
WHEN i >= 0 THEN i
5371
END AS ">= 0 or Null"
54-
FROM INT4_TBL;
72+
FROM CASE_TBL;
5573
Five|>= 0 or Null
5674
----+------------
57-
| 0
58-
| 123456
59-
|
60-
| 2147483647
61-
|
62-
(5 rows)
75+
| 1
76+
| 2
77+
| 3
78+
| 4
79+
(4 rows)
6380

6481
QUERY: SELECT '' AS "Five",
65-
CASE WHEN f1 >= 0 THEN (f1 - f1)
66-
ELSE f1
82+
CASE WHEN i >= 0 THEN (i - i)
83+
ELSE i
6784
END AS "Simplest Math"
68-
FROM INT4_TBL;
85+
FROM CASE_TBL;
6986
Five|Simplest Math
7087
----+-------------
7188
| 0
7289
| 0
73-
| -123456
7490
| 0
75-
| -2147483647
76-
(5 rows)
91+
| 0
92+
(4 rows)
93+
94+
QUERY: SELECT '' AS "Five", i AS "Value",
95+
CASE WHEN (i < 0) THEN 'small'
96+
WHEN (i = 0) THEN 'zero'
97+
WHEN (i = 1) THEN 'one'
98+
WHEN (i = 2) THEN 'two'
99+
ELSE 'big'
100+
END AS "Category"
101+
FROM CASE_TBL;
102+
Five|Value|Category
103+
----+-----+--------
104+
| 1|one
105+
| 2|two
106+
| 3|big
107+
| 4|big
108+
(4 rows)
77109

78-
QUERY: SELECT '' AS "Five", f1 AS "Value",
79-
CASE WHEN (f1 < 0) THEN 'small'
80-
WHEN (f1 = 0) THEN 'zero'
81-
WHEN (f1 = 1) THEN 'one'
82-
WHEN (f1 = 2) THEN 'two'
110+
QUERY: /*
111+
SELECT '' AS "Five",
112+
CASE WHEN ((i < 0) or (i < 0)) THEN 'small'
113+
WHEN ((i = 0) or (i = 0)) THEN 'zero'
114+
WHEN ((i = 1) or (i = 1)) THEN 'one'
115+
WHEN ((i = 2) or (i = 2)) THEN 'two'
83116
ELSE 'big'
84117
END AS "Category"
85-
FROM INT4_TBL;
86-
Five| Value|Category
87-
----+-----------+--------
88-
| 0|zero
89-
| 123456|big
90-
| -123456|small
91-
| 2147483647|big
92-
|-2147483647|small
93-
(5 rows)
118+
FROM CASE_TBL;
119+
*/
120+
SELECT * FROM CASE_TBL WHERE COALESCE(f,i) = 4;
121+
i|f
122+
-+-
123+
4|
124+
(1 row)
125+
126+
QUERY: SELECT * FROM CASE_TBL WHERE NULLIF(f,i) = 2;
127+
i|f
128+
-+-
129+
(0 rows)
130+
131+
QUERY: /*
132+
This crashes the backend at the moment...
133+
- thomas 1998-12-12
134+
SELECT COALESCE(a.i, a.f, b.i, b.j)
135+
FROM CASE_TBL a, CASE2_TBL b;
136+
*/
137+
SELECT *
138+
FROM CASE_TBL a, CASE2_TBL b
139+
WHERE COALESCE(a.i, a.f, b.i, b.j) = 4;
140+
i|f|i| j
141+
-+-+-+--
142+
4| |1|-1
143+
4| |2|-2
144+
4| |3|-3
145+
4| |2|-4
146+
4| |1|
147+
4| | |-6
148+
(6 rows)
149+
150+
QUERY: /*
151+
This crashes the backend at the moment...
152+
- thomas 1998-12-12
153+
SELECT '' AS Five, NULLIF(a.i,b.i) AS "NULLIF(a.i,b.i)",
154+
NULLIF(b.i, 4) AS "NULLIF(b.i,4)"
155+
FROM CASE_TBL a, CASE2_TBL b;
156+
*/
157+
SELECT '' AS "Two", *
158+
FROM CASE_TBL a, CASE2_TBL b
159+
WHERE COALESCE(f,b.i) = 2;
160+
Two|i|f|i| j
161+
---+-+-+-+--
162+
|4| |2|-2
163+
|4| |2|-4
164+
(2 rows)
165+
166+
QUERY: UPDATE CASE_TBL
167+
SET i = CASE WHEN i >= 0 THEN (- i)
168+
ELSE (2 * i) END;
169+
QUERY: SELECT * FROM CASE_TBL;
170+
i| f
171+
--+-----
172+
-1| 10.1
173+
-2| 20.2
174+
-3|-30.3
175+
-4|
176+
(4 rows)
177+
178+
QUERY: UPDATE CASE_TBL
179+
SET i = CASE WHEN i >= 2 THEN (2 * i)
180+
ELSE (3 * i) END;
181+
QUERY: SELECT * FROM CASE_TBL;
182+
i| f
183+
---+-----
184+
-3| 10.1
185+
-6| 20.2
186+
-9|-30.3
187+
-12|
188+
(4 rows)
94189

190+
QUERY: /*
191+
This crashes the backend at the moment...
192+
- thomas 1998-12-12
193+
UPDATE CASE_TBL
194+
SET i = CASE WHEN b.i >= 2 THEN (2 * j)
195+
ELSE (3 * j) END
196+
FROM CASE2_TBL b
197+
WHERE j = -CASE_TBL.i;
198+
SELECT * FROM CASE_TBL;
199+
*/
200+
DROP TABLE CASE_TBL;
201+
QUERY: DROP TABLE CASE2_TBL;

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