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sqlite3

    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 1.1.1.1 2012/02/21 17:04:16 misho 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