85 lines
2.2 KiB
Plaintext
85 lines
2.2 KiB
Plaintext
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# 2009 November 10
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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# Additional test cases for the COALESCE() and IFNULL() functions.
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#
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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do_test coalesce-1.0 {
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db eval {
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CREATE TABLE t1(a INTEGER PRIMARY KEY, b, c, d);
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INSERT INTO t1 VALUES(1, null, null, null);
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INSERT INTO t1 VALUES(2, 2, 99, 99);
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INSERT INTO t1 VALUES(3, null, 3, 99);
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INSERT INTO t1 VALUES(4, null, null, 4);
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INSERT INTO t1 VALUES(5, null, null, null);
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INSERT INTO t1 VALUES(6, 22, 99, 99);
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INSERT INTO t1 VALUES(7, null, 33, 99);
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INSERT INTO t1 VALUES(8, null, null, 44);
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SELECT coalesce(b,c,d) FROM t1 ORDER BY a;
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}
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} {{} 2 3 4 {} 22 33 44}
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do_test coalesce-1.1 {
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db eval {
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SELECT coalesce(d+c+b,d+c,d) FROM t1 ORDER BY a;
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}
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} {{} 200 102 4 {} 220 132 44}
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do_test coalesce-1.2 {
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db eval {
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SELECT ifnull(d+c+b,ifnull(d+c,d)) FROM t1 ORDER BY a;
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}
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} {{} 200 102 4 {} 220 132 44}
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do_test coalesce-1.3 {
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db eval {
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SELECT ifnull(ifnull(d+c+b,d+c),d) FROM t1 ORDER BY a;
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}
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} {{} 200 102 4 {} 220 132 44}
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do_test coalesce-1.4 {
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db eval {
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SELECT ifnull(ifnull(b,c),d) FROM t1 ORDER BY a;
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}
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} {{} 2 3 4 {} 22 33 44}
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do_test coalesce-1.5 {
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db eval {
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SELECT ifnull(b,ifnull(c,d)) FROM t1 ORDER BY a;
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}
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} {{} 2 3 4 {} 22 33 44}
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do_test coalesce-1.6 {
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db eval {
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SELECT coalesce(b,NOT b,-b,abs(b),lower(b),length(b),min(b,5),b*123,c)
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FROM t1 ORDER BY a;
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}
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} {{} 2 3 {} {} 22 33 {}}
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do_test coalesce-1.7 {
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db eval {
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SELECT ifnull(nullif(a,4),99)
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FROM t1 ORDER BY a;
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}
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} {1 2 3 99 5 6 7 8}
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do_test coalesce-1.8 {
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db eval {
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pragma vdbe_listing=on;
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SELECT coalesce(
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CASE WHEN b=2 THEN 123 END,
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CASE WHEN b=3 THEN 234 END,
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CASE WHEN c=3 THEN 345 WHEN c=33 THEN 456 END,
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d
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)
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FROM t1 ORDER BY a;
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}
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} {{} 123 345 4 {} 99 456 44}
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finish_test
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