3 # The author disclaims copyright to this source code. In place of
4 # a legal notice, here is a blessing:
6 # May you do good and not evil.
7 # May you find forgiveness for yourself and forgive others.
8 # May you share freely, never taking more than you give.
10 #***********************************************************************
11 # Additional test cases for the COALESCE() and IFNULL() functions.
14 set testdir [file dirname $argv0]
15 source $testdir/tester.tcl
18 do_test coalesce-1.0 {
20 CREATE TABLE t1(a INTEGER PRIMARY KEY, b, c, d);
21 INSERT INTO t1 VALUES(1, null, null, null);
22 INSERT INTO t1 VALUES(2, 2, 99, 99);
23 INSERT INTO t1 VALUES(3, null, 3, 99);
24 INSERT INTO t1 VALUES(4, null, null, 4);
25 INSERT INTO t1 VALUES(5, null, null, null);
26 INSERT INTO t1 VALUES(6, 22, 99, 99);
27 INSERT INTO t1 VALUES(7, null, 33, 99);
28 INSERT INTO t1 VALUES(8, null, null, 44);
30 SELECT coalesce(b,c,d) FROM t1 ORDER BY a;
32 } {{} 2 3 4 {} 22 33 44}
33 do_test coalesce-1.1 {
35 SELECT coalesce(d+c+b,d+c,d) FROM t1 ORDER BY a;
37 } {{} 200 102 4 {} 220 132 44}
38 do_test coalesce-1.2 {
40 SELECT ifnull(d+c+b,ifnull(d+c,d)) FROM t1 ORDER BY a;
42 } {{} 200 102 4 {} 220 132 44}
43 do_test coalesce-1.3 {
45 SELECT ifnull(ifnull(d+c+b,d+c),d) FROM t1 ORDER BY a;
47 } {{} 200 102 4 {} 220 132 44}
48 do_test coalesce-1.4 {
50 SELECT ifnull(ifnull(b,c),d) FROM t1 ORDER BY a;
52 } {{} 2 3 4 {} 22 33 44}
53 do_test coalesce-1.5 {
55 SELECT ifnull(b,ifnull(c,d)) FROM t1 ORDER BY a;
57 } {{} 2 3 4 {} 22 33 44}
58 do_test coalesce-1.6 {
60 SELECT coalesce(b,NOT b,-b,abs(b),lower(b),length(b),min(b,5),b*123,c)
63 } {{} 2 3 {} {} 22 33 {}}
64 do_test coalesce-1.7 {
66 SELECT ifnull(nullif(a,4),99)
70 do_test coalesce-1.8 {
72 pragma vdbe_listing=on;
74 CASE WHEN b=2 THEN 123 END,
75 CASE WHEN b=3 THEN 234 END,
76 CASE WHEN c=3 THEN 345 WHEN c=33 THEN 456 END,
81 } {{} 123 345 4 {} 99 456 44}