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| 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 |
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