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When the right table in a LEFT OUTER JOIN contains an INTEGER PRIMARY KEY

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make sure that key is NULL if there is no row in the right table that
matches the current row in the left table.  Tickets #246 and #247. (CVS 873)

FossilOrigin-Name: 6a45fe3bd7e19cf9c20fc6cb65b0269cdd704490
This commit is contained in:
drh
2003-02-20 01:48:12 +00:00
parent e6da3c1816
commit 50cceb36b6
4 changed files with 36 additions and 10 deletions
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27
test/join.test
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@ -12,7 +12,7 @@
#
# This file implements tests for joins, including outer joins.
#
# $Id: join.test,v 1.7 2002/10/27 19:35:35 drh Exp $
# $Id: join.test,v 1.8 2003/02/20 01:48:13 drh Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
@ -352,4 +352,29 @@ do_test join-6.8 {
} {1 2 3 2 3 4 2 3 4 3 4 5 3 4 5 {} {} {}}
# A test for ticket #247.
#
do_test join-7.1 {
execsql {
CREATE TABLE t7 (x, y);
INSERT INTO t7 VALUES ("pa1", 1);
INSERT INTO t7 VALUES ("pa2", NULL);
INSERT INTO t7 VALUES ("pa3", NULL);
INSERT INTO t7 VALUES ("pa4", 2);
INSERT INTO t7 VALUES ("pa30", 131);
INSERT INTO t7 VALUES ("pa31", 130);
INSERT INTO t7 VALUES ("pa28", NULL);
CREATE TABLE t8 (a integer primary key, b);
INSERT INTO t8 VALUES (1, "pa1");
INSERT INTO t8 VALUES (2, "pa4");
INSERT INTO t8 VALUES (3, NULL);
INSERT INTO t8 VALUES (4, NULL);
INSERT INTO t8 VALUES (130, "pa31");
INSERT INTO t8 VALUES (131, "pa30");
SELECT coalesce(t8.a,999) from t7 LEFT JOIN t8 on y=a;
}
} {1 999 999 2 131 130 999}
finish_test