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# 2016-08-18
#
# 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.
#
#***********************************************************************
# The focus of this file is handling of NULL values in row-value IN
# expressions.
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
set ::testprefix rowvalue6
do_execsql_test 1.1 {
CREATE TABLE t1(a,b,c);
CREATE INDEX t1x1 ON t1(a,b);
INSERT INTO t1 VALUES(1,NULL,200);
CREATE TABLE t2(x,y,z);
INSERT INTO t2 VALUES(1,NULL,55);
SELECT c FROM t1 WHERE (a,b) IN (SELECT x,y FROM t2 WHERE z==55);
} {}
do_execsql_test 1.2 {
INSERT INTO t1 VALUES(2,3,400);
INSERT INTO t2 VALUES(2,3,55);
SELECT c FROM t1 WHERE (a,b) IN (SELECT x,y FROM t2 WHERE z==55);
} {400}
finish_test
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