| # 2013-05-07 |
| # |
| # 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. |
| # |
| #*********************************************************************** |
| # This file implements regression tests for compound SELECT statements |
| # that have ORDER BY clauses with collating sequences that differ |
| # from the collating sequence used for comparison in the compound. |
| # |
| # Ticket 6709574d2a8d8b9be3a9cb1afbf4ff2de48ea4e7: |
| # drh added on 2013-05-06 15:21:16: |
| # |
| # In the code shown below (which is intended to be run from the |
| # sqlite3.exe command-line tool) the three SELECT statements should all |
| # generate the same answer. But the third one does not. It is as if the |
| # COLLATE clause on the ORDER BY somehow got pulled into the EXCEPT |
| # operator. Note that the ".print" commands are instructions to the |
| # sqlite3.exe shell program to output delimiter lines so that you can more |
| # easily tell where the output of one query ends and the next query |
| # begins. |
| # |
| # CREATE TABLE t1(a); |
| # INSERT INTO t1 VALUES('abc'),('def'); |
| # CREATE TABLE t2(a); |
| # INSERT INTO t2 VALUES('DEF'); |
| # |
| # SELECT a FROM t1 EXCEPT SELECT a FROM t2 ORDER BY a; |
| # .print ----- |
| # SELECT a FROM (SELECT a FROM t1 EXCEPT SELECT a FROM t2) |
| # ORDER BY a COLLATE nocase; |
| # .print ----- |
| # SELECT a FROM t1 EXCEPT SELECT a FROM t2 ORDER BY a COLLATE nocase; |
| # |
| # Bisecting shows that this problem was introduced in SQLite version 3.6.0 |
| # by check-in [8bbfa97837a74ef] on 2008-06-15. |
| # |
| |
| set testdir [file dirname $argv0] |
| source $testdir/tester.tcl |
| |
| do_test selectE-1.0 { |
| db eval { |
| CREATE TABLE t1(a); |
| INSERT INTO t1 VALUES('abc'),('def'),('ghi'); |
| CREATE TABLE t2(a); |
| INSERT INTO t2 VALUES('DEF'),('abc'); |
| CREATE TABLE t3(a); |
| INSERT INTO t3 VALUES('def'),('jkl'); |
| |
| SELECT a FROM t1 EXCEPT SELECT a FROM t2 |
| ORDER BY a COLLATE nocase; |
| } |
| } {def ghi} |
| do_test selectE-1.1 { |
| db eval { |
| SELECT a FROM t2 EXCEPT SELECT a FROM t3 |
| ORDER BY a COLLATE nocase; |
| } |
| } {abc DEF} |
| do_test selectE-1.2 { |
| db eval { |
| SELECT a FROM t2 EXCEPT SELECT a FROM t3 |
| ORDER BY a COLLATE binary; |
| } |
| } {DEF abc} |
| do_test selectE-1.3 { |
| db eval { |
| SELECT a FROM t2 EXCEPT SELECT a FROM t3 |
| ORDER BY a; |
| } |
| } {DEF abc} |
| |
| do_test selectE-2.1 { |
| db eval { |
| DELETE FROM t2; |
| DELETE FROM t3; |
| INSERT INTO t2 VALUES('ABC'),('def'),('GHI'),('jkl'); |
| INSERT INTO t3 SELECT lower(a) FROM t2; |
| SELECT a COLLATE nocase FROM t2 EXCEPT SELECT a FROM t3 |
| ORDER BY 1 |
| } |
| } {} |
| do_test selectE-2.2 { |
| db eval { |
| SELECT a COLLATE nocase FROM t2 EXCEPT SELECT a FROM t3 |
| ORDER BY 1 COLLATE binary |
| } |
| } {} |
| |
| do_catchsql_test selectE-3.1 { |
| SELECT 1 EXCEPT SELECT 2 ORDER BY 1 COLLATE nocase EXCEPT SELECT 3; |
| } {1 {ORDER BY clause should come after EXCEPT not before}} |
| |
| |
| finish_test |