Fixed bug #37004.

The value of JOIN::tables must be set to 0 when there
is no matching min/max row.

mysql-test/r/subselect.result:
  Added a test case for bug #37004.
mysql-test/t/subselect.test:
  Added a test case for bug #37004.

mysql-test/r/subselect.result

@@ -4391,3 +4391,10 @@ SELECT * FROM t1 WHERE _utf8'a' = ANY (SELECT s1 FROM t1);
 s1
 a
 DROP TABLE t1;
+CREATE TABLE t1(c int, KEY(c));
+CREATE TABLE t2(a int, b int);
+INSERT INTO t2 VALUES (1, 10), (2, NULL);
+INSERT INTO t1 VALUES (1), (3);
+SELECT * FROM t2 WHERE b NOT IN (SELECT max(t.c) FROM t1, t1 t WHERE t.c>10);
+a	b
+DROP TABLE t1,t2;

mysql-test/t/subselect.test

@@ -3273,3 +3273,15 @@ INSERT INTO t1 VALUES ('a');
 SELECT * FROM t1 WHERE _utf8'a' = ANY (SELECT s1 FROM t1);
 DROP TABLE t1;
 
+#
+# Bug #37004: NOT IN subquery with MAX over an empty set
+#
+
+CREATE TABLE t1(c int, KEY(c));
+CREATE TABLE t2(a int, b int);
+INSERT INTO t2 VALUES (1, 10), (2, NULL);
+INSERT INTO t1 VALUES (1), (3);
+
+SELECT * FROM t2 WHERE b NOT IN (SELECT max(t.c) FROM t1, t1 t WHERE t.c>10);
+
+DROP TABLE t1,t2;

sql/sql_select.cc

@@ -888,6 +888,7 @@ JOIN::optimize()
       {
         DBUG_PRINT("info",("No matching min/max row"));
 	zero_result_cause= "No matching min/max row";
+        tables= 0;
 	error=0;
 	DBUG_RETURN(0);
       }
@@ -901,6 +902,7 @@ JOIN::optimize()
       {
         DBUG_PRINT("info",("No matching min/max row"));
         zero_result_cause= "No matching min/max row";
+        tables= 0;
         error=0;
         DBUG_RETURN(0);
       }