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Annotation of embedaddon/sqlite3/test/coalesce.test, revision 1.1.1.1

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