sqlite/test/where6.test
drh 42165be18c Make sure ON clause terms of a LEFT JOIN are not used with an index on the
right table of the join.  Ticket #3015. (CVS 4919)

FossilOrigin-Name: 3fafa562593b51d38f58e7a691c193d34a812a05
2008-03-26 14:56:34 +00:00

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# 2007 June 8
#
# 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 SQLite library. The
# focus of this file is testing that terms in the ON clause of
# a LEFT OUTER JOIN are not used with indices. See ticket #3015.
#
# $Id: where6.test,v 1.1 2008/03/26 14:56:35 drh Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
# Build some test data
#
do_test where6-1.0 {
execsql {
CREATE TABLE t1(a INTEGER PRIMARY KEY,b,c);
INSERT INTO t1 VALUES(1,3,1);
INSERT INTO t1 VALUES(2,4,2);
CREATE TABLE t2(x INTEGER PRIMARY KEY);
INSERT INTO t2 VALUES(3);
SELECT * FROM t1 LEFT JOIN t2 ON b=x AND c=1;
}
} {1 3 1 3 2 4 2 {}}
do_test where6-1.1 {
execsql {
SELECT * FROM t1 LEFT JOIN t2 ON b=x WHERE c=1;
}
} {1 3 1 3}
do_test where6-1.2 {
execsql {
CREATE INDEX i1 ON t1(c);
SELECT * FROM t1 LEFT JOIN t2 ON b=x AND c=1;
}
} {1 3 1 3 2 4 2 {}}
do_test where6-1.3 {
execsql {
SELECT * FROM t1 LEFT JOIN t2 ON b=x WHERE c=1;
}
} {1 3 1 3}
finish_test