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 63
