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Annotation of embedaddon/sqlite3/test/coalesce.test, revision 1.1

1.1     ! misho       1: # 2009 November 10
        !             2: #
        !             3: # The author disclaims copyright to this source code.  In place of
        !             4: # a legal notice, here is a blessing:
        !             5: #
        !             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.
        !             9: #
        !            10: #***********************************************************************
        !            11: # Additional test cases for the COALESCE() and IFNULL() functions.
        !            12: #
        !            13: 
        !            14: set testdir [file dirname $argv0]
        !            15: source $testdir/tester.tcl
        !            16: 
        !            17: 
        !            18: do_test coalesce-1.0 {
        !            19:   db eval {
        !            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);
        !            29: 
        !            30:     SELECT coalesce(b,c,d) FROM t1 ORDER BY a;
        !            31:   }
        !            32: } {{} 2 3 4 {} 22 33 44}
        !            33: do_test coalesce-1.1 {
        !            34:   db eval {
        !            35:     SELECT coalesce(d+c+b,d+c,d) FROM t1 ORDER BY a;
        !            36:   }
        !            37: } {{} 200 102 4 {} 220 132 44}
        !            38: do_test coalesce-1.2 {
        !            39:   db eval {
        !            40:     SELECT ifnull(d+c+b,ifnull(d+c,d)) FROM t1 ORDER BY a;
        !            41:   }
        !            42: } {{} 200 102 4 {} 220 132 44}
        !            43: do_test coalesce-1.3 {
        !            44:   db eval {
        !            45:     SELECT ifnull(ifnull(d+c+b,d+c),d) FROM t1 ORDER BY a;
        !            46:   }
        !            47: } {{} 200 102 4 {} 220 132 44}
        !            48: do_test coalesce-1.4 {
        !            49:   db eval {
        !            50:     SELECT ifnull(ifnull(b,c),d) FROM t1 ORDER BY a;
        !            51:   }
        !            52: } {{} 2 3 4 {} 22 33 44}
        !            53: do_test coalesce-1.5 {
        !            54:   db eval {
        !            55:     SELECT ifnull(b,ifnull(c,d)) FROM t1 ORDER BY a;
        !            56:   }
        !            57: } {{} 2 3 4 {} 22 33 44}
        !            58: do_test coalesce-1.6 {
        !            59:   db eval {
        !            60:     SELECT coalesce(b,NOT b,-b,abs(b),lower(b),length(b),min(b,5),b*123,c)
        !            61:       FROM t1 ORDER BY a;
        !            62:   }
        !            63: } {{} 2 3 {} {} 22 33 {}}
        !            64: do_test coalesce-1.7 {
        !            65:   db eval {
        !            66:     SELECT ifnull(nullif(a,4),99)
        !            67:       FROM t1 ORDER BY a;
        !            68:   }
        !            69: } {1 2 3 99 5 6 7 8}
        !            70: do_test coalesce-1.8 {
        !            71:   db eval {
        !            72: pragma vdbe_listing=on;
        !            73:     SELECT coalesce(
        !            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,
        !            77:       d
        !            78:     )
        !            79:     FROM t1 ORDER BY a;
        !            80:   }
        !            81: } {{} 123 345 4 {} 99 456 44}
        !            82: 
        !            83: 
        !            84: finish_test