/trunk/test/tkt3824.test |
@@ -0,0 +1,99 @@ |
# 2009 April 24 |
# |
# 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 #3824 |
# |
# When you use an "IS NULL" constraint on a UNIQUE index, the result |
# is not necessarily UNIQUE. Make sure the optimizer does not assume |
# uniqueness. |
# |
# $Id: tkt3824.test,v 1.2 2009/04/24 20:32:31 drh Exp $ |
|
set testdir [file dirname $argv0] |
source $testdir/tester.tcl |
|
proc execsql_status {sql {db db}} { |
set result [uplevel $db eval [list $sql]] |
if {[db status sort]} { |
concat $result sort |
} else { |
concat $result nosort |
} |
} |
|
do_test tkt3824-1.1 { |
db eval { |
CREATE TABLE t1(a,b); |
INSERT INTO t1 VALUES(1,NULL); |
INSERT INTO t1 VALUES(9,NULL); |
INSERT INTO t1 VALUES(5,NULL); |
INSERT INTO t1 VALUES(123,NULL); |
INSERT INTO t1 VALUES(-10,NULL); |
CREATE UNIQUE INDEX t1b ON t1(b); |
} |
execsql_status { |
SELECT a FROM t1 WHERE b IS NULL ORDER BY a; |
} |
} {-10 1 5 9 123 sort} |
do_test tkt3824-1.2 { |
execsql_status { |
SELECT a FROM t1 WHERE b IS NULL ORDER BY b, a; |
} |
} {-10 1 5 9 123 sort} |
|
do_test tkt3824-2.1 { |
db eval { |
CREATE TABLE t2(a,b,c); |
INSERT INTO t2 VALUES(1,1,NULL); |
INSERT INTO t2 VALUES(9,2,NULL); |
INSERT INTO t2 VALUES(5,2,NULL); |
INSERT INTO t2 VALUES(123,3,NULL); |
INSERT INTO t2 VALUES(-10,3,NULL); |
CREATE UNIQUE INDEX t2bc ON t2(b,c); |
} |
execsql_status { |
SELECT a FROM t2 WHERE b=2 AND c IS NULL ORDER BY a; |
} |
} {5 9 sort} |
do_test tkt3824-2.2 { |
execsql_status { |
SELECT a FROM t2 WHERE b=2 AND c IS NULL ORDER BY b, a; |
} |
} {5 9 sort} |
do_test tkt3824-2.3 { |
lsort [execsql_status { |
SELECT a FROM t2 WHERE b=2 AND c IS NULL ORDER BY b; |
}] |
} {5 9 nosort} |
|
do_test tkt3824-3.1 { |
db eval { |
CREATE TABLE t3(x,y); |
INSERT INTO t3 SELECT a, b FROM t1; |
INSERT INTO t3 VALUES(234,567); |
CREATE UNIQUE INDEX t3y ON t3(y); |
DELETE FROM t3 WHERE y IS NULL; |
SELECT * FROM t3; |
} |
} {234 567} |
|
do_test tkt3824-4.1 { |
db eval { |
CREATE TABLE t4(x,y); |
INSERT INTO t4 SELECT a, b FROM t1; |
INSERT INTO t4 VALUES(234,567); |
CREATE UNIQUE INDEX t4y ON t4(y); |
UPDATE t4 SET rowid=rowid+100 WHERE y IS NULL; |
SELECT rowid, x FROM t4 ORDER BY rowid; |
} |
} {6 234 101 1 102 9 103 5 104 123 105 -10} |
|
finish_test |