Import SQLite 3.8.7.4.

third_party/sqlite/src/test/join5.test

 # 2005 September 19
 #
 # 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.
 #
 #***********************************************************************
@@ skipping 88 matching lines @@
 do_test join5-2.10 {
   execsql {SELECT * FROM xy LEFT JOIN ab ON 0 WHERE NULL}
 } {}
 do_test join5-2.11 {
   execsql {SELECT * FROM xy LEFT JOIN ab ON 1 WHERE NULL}
 } {}
 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