AryaWu/sqlite

1# 2008 February 152#3# The author disclaims copyright to this source code.  In place of4# 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 used19# 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 the22# order does matter.23#24# $Id: tkt2942.test,v 1.1 2008/02/15 14:33:04 drh Exp $25#26 27set testdir [file dirname $argv0]28source $testdir/tester.tcl29 30ifcapable !subquery {31  finish_test32  return33}34 35do_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}45do_test tkt2942.2 {46  execsql {47    SELECT group_concat(num) FROM (SELECT num FROM t1 ORDER BY num);48  }49} {1,2,3,4}50do_test tkt2942.3 {51  execsql {52    SELECT group_concat(num) FROM (SELECT num FROM t1);53  }54} {2,1,3,4}55do_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 62finish_test63