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Annotation of embedaddon/sqlite3/test/tkt2942.test, revision 1.1

1.1     ! misho       1: # 2008 February 15
        !             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: #
        !            12: # Ticket #2942.  
        !            13: #
        !            14: # Queries of the form:
        !            15: #
        !            16: #     SELECT group_concat(x) FROM (SELECT * FROM table ORDER BY 1);
        !            17: #
        !            18: # The ORDER BY would be dropped by the query flattener.  This used
        !            19: # to not matter because aggregate functions sum(), min(), max(), avg(),
        !            20: # and so forth give the same result regardless of the order of inputs.
        !            21: # But with the addition of the group_concat() function, suddenly the
        !            22: # order does matter.
        !            23: #
        !            24: # $Id: tkt2942.test,v 1.1 2008/02/15 14:33:04 drh Exp $
        !            25: #
        !            26: 
        !            27: set testdir [file dirname $argv0]
        !            28: source $testdir/tester.tcl
        !            29: 
        !            30: ifcapable !subquery {
        !            31:   finish_test
        !            32:   return
        !            33: }
        !            34: 
        !            35: do_test tkt2942.1 {
        !            36:   execsql {
        !            37:     create table t1(num int);
        !            38:     insert into t1 values (2);
        !            39:     insert into t1 values (1);
        !            40:     insert into t1 values (3);
        !            41:     insert into t1 values (4);
        !            42:     SELECT group_concat(num) FROM (SELECT num FROM t1 ORDER BY num DESC);
        !            43:   }
        !            44: } {4,3,2,1}
        !            45: do_test tkt2942.2 {
        !            46:   execsql {
        !            47:     SELECT group_concat(num) FROM (SELECT num FROM t1 ORDER BY num);
        !            48:   }
        !            49: } {1,2,3,4}
        !            50: do_test tkt2942.3 {
        !            51:   execsql {
        !            52:     SELECT group_concat(num) FROM (SELECT num FROM t1);
        !            53:   }
        !            54: } {2,1,3,4}
        !            55: do_test tkt2942.4 {
        !            56:   execsql {
        !            57:     SELECT group_concat(num) FROM (SELECT num FROM t1 ORDER BY rowid DESC);
        !            58:   }
        !            59: } {4,3,1,2}
        !            60: 
        !            61: 
        !            62: finish_test