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If a table is the right operand of a LEFT JOIN, then any column of that

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table can be NULL even if that column as a NOT NULL constraint.
Fix for ticket [6f2222d550f5b0ee7ed].

FossilOrigin-Name: 6f6fcbe4736b9468a495c684d5eebc8bfe5c566a
This commit is contained in:
drh
2014-12-04 16:27:17 +00:00
parent d8922052b2
commit 72673a24e2
6 changed files with 72 additions and 12 deletions
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54
test/join5.test
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@ -106,5 +106,59 @@ do_test join5-2.12 {
execsql {SELECT * FROM xy LEFT JOIN ab ON NULL WHERE NULL}
} {}
# Ticket https://www.sqlite.org/src/tktview/6f2222d550f5b0ee7ed37601
# Incorrect output on a LEFT JOIN.
#
do_execsql_test join5-3.1 {
DROP TABLE IF EXISTS t1;
DROP TABLE IF EXISTS t2;
DROP TABLE IF EXISTS t3;
CREATE TABLE x1(a);
INSERT INTO x1 VALUES(1);
CREATE TABLE x2(b NOT NULL);
CREATE TABLE x3(c, d);
INSERT INTO x3 VALUES('a', NULL);
INSERT INTO x3 VALUES('b', NULL);
INSERT INTO x3 VALUES('c', NULL);
SELECT * FROM x1 LEFT JOIN x2 LEFT JOIN x3 ON x3.d = x2.b;
} {1 {} {} {}}
do_execsql_test join5-3.2 {
DROP TABLE IF EXISTS t1;
DROP TABLE IF EXISTS t2;
DROP TABLE IF EXISTS t3;
DROP TABLE IF EXISTS t4;
DROP TABLE IF EXISTS t5;
CREATE TABLE t1(x text NOT NULL, y text);
CREATE TABLE t2(u text NOT NULL, x text NOT NULL);
CREATE TABLE t3(w text NOT NULL, v text);
CREATE TABLE t4(w text NOT NULL, z text NOT NULL);
CREATE TABLE t5(z text NOT NULL, m text);
INSERT INTO t1 VALUES('f6d7661f-4efe-4c90-87b5-858e61cd178b',NULL);
INSERT INTO t1 VALUES('f6ea82c3-2cad-45ce-ae8f-3ddca4fb2f48',NULL);
INSERT INTO t1 VALUES('f6f47499-ecb4-474b-9a02-35be73c235e5',NULL);
INSERT INTO t1 VALUES('56f47499-ecb4-474b-9a02-35be73c235e5',NULL);
INSERT INTO t3 VALUES('007f2033-cb20-494c-b135-a1e4eb66130c',
'f6d7661f-4efe-4c90-87b5-858e61cd178b');
SELECT *
FROM t3
INNER JOIN t1 ON t1.x= t3.v AND t1.y IS NULL
LEFT JOIN t4 ON t4.w = t3.w
LEFT JOIN t5 ON t5.z = t4.z
LEFT JOIN t2 ON t2.u = t5.m
LEFT JOIN t1 xyz ON xyz.y = t2.x;
} {007f2033-cb20-494c-b135-a1e4eb66130c f6d7661f-4efe-4c90-87b5-858e61cd178b f6d7661f-4efe-4c90-87b5-858e61cd178b {} {} {} {} {} {} {} {} {}}
do_execsql_test join5-3.3 {
DROP TABLE IF EXISTS x1;
DROP TABLE IF EXISTS x2;
DROP TABLE IF EXISTS x3;
CREATE TABLE x1(a);
INSERT INTO x1 VALUES(1);
CREATE TABLE x2(b NOT NULL);
CREATE TABLE x3(c, d);
INSERT INTO x3 VALUES('a', NULL);
INSERT INTO x3 VALUES('b', NULL);
INSERT INTO x3 VALUES('c', NULL);
SELECT * FROM x1 LEFT JOIN x2 JOIN x3 WHERE x3.d = x2.b;
} {}
finish_test