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# 2008 February 15
#
# The author disclaims copyright to this source code. In place of
# a legal notice, here is a blessing:
#
# May you do good and not evil.
# May you find forgiveness for yourself and forgive others.
# May you share freely, never taking more than you give.
#
#***********************************************************************
#
# Ticket #2942.
#
# Queries of the form:
#
# SELECT group_concat(x) FROM (SELECT * FROM table ORDER BY 1);
#
# The ORDER BY would be dropped by the query flattener. This used
# to not matter because aggregate functions sum(), min(), max(), avg(),
# and so forth give the same result regardless of the order of inputs.
# But with the addition of the group_concat() function, suddenly the
# order does matter.
#
# $Id: tkt2942.test,v 1.1 2008/02/15 14:33:04 drh Exp $
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
ifcapable !subquery {
finish_test
return
}
do_test tkt2942.1 {
execsql {
create table t1(num int);
insert into t1 values (2);
insert into t1 values (1);
insert into t1 values (3);
insert into t1 values (4);
SELECT group_concat(num) FROM (SELECT num FROM t1 ORDER BY num DESC);
}
} {4,3,2,1}
do_test tkt2942.2 {
execsql {
SELECT group_concat(num) FROM (SELECT num FROM t1 ORDER BY num);
}
} {1,2,3,4}
do_test tkt2942.3 {
execsql {
SELECT group_concat(num) FROM (SELECT num FROM t1);
}
} {2,1,3,4}
do_test tkt2942.4 {
execsql {
SELECT group_concat(num) FROM (SELECT num FROM t1 ORDER BY rowid DESC);
}
} {4,3,1,2}
finish_test
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