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Annotation of embedaddon/sqlite3/test/tkt2942.test, revision 1.1.1.1

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