mysql5/mysql-5.7.27/mysql-test/r/subselect_debug.result

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CREATE TABLE t1(id INT);
INSERT INTO t1 VALUES (1),(2),(3),(4);
INSERT INTO t1 SELECT a.id FROM t1 a,t1 b,t1 c,t1 d;
SET @orig_debug = @@debug;
SET SESSION debug="d,subselect_exec_fail";
SELECT SUM(EXISTS(SELECT RAND() FROM t1)) FROM t1;
SUM(EXISTS(SELECT RAND() FROM t1))
0
SELECT REVERSE(EXISTS(SELECT RAND() FROM t1));
REVERSE(EXISTS(SELECT RAND() FROM t1))
0
SET SESSION debug=@orig_debug;
DROP TABLE t1;
#
# Bug#21383882 ASSERTION FAILED: 0 IN SELECT_LEX::PRINT()
#
CREATE TABLE t1(a INT);
INSERT INTO t1 VALUES(1),(1);
SELECT ((SELECT 1 FROM t1) IN (SELECT 1 FROM t1)) - (11111111111111111111);
ERROR 21000: Subquery returns more than 1 row
DROP TABLE t1;