diff options
Diffstat (limited to 'mysql-test/r/derived_opt.result')
| -rw-r--r-- | mysql-test/r/derived_opt.result | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/mysql-test/r/derived_opt.result b/mysql-test/r/derived_opt.result index dc9b5910af1..bbca7f2ac90 100644 --- a/mysql-test/r/derived_opt.result +++ b/mysql-test/r/derived_opt.result @@ -499,9 +499,42 @@ where D1.a= t1.a; id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 10 Using where -1 PRIMARY <derived2> hash_ALL key0 #hash#key0 5 test.t1.a 100 Using join buffer (flat, BNLH join) +1 PRIMARY <derived2> ref key0 key0 5 test.t1.a 10 2 DERIVED t2 ALL NULL NULL NULL NULL 100 Using filesort set join_cache_level=@tmp_jcl; set optimizer_switch=@tmp_os; drop table t1, t2; +# +# Bug mdev-17382: equi-join of derived table with join_cache_level=4 +# +CREATE TABLE t1 ( +id int NOT NULL, +amount decimal DEFAULT NULL, +PRIMARY KEY (id) +); +CREATE TABLE t2 ( +id int NOT NULL, +name varchar(50) DEFAULT NULL, +PRIMARY KEY (id) +); +INSERT INTO t1 VALUES +(1, 10.0000), (2, 20.0000), (3, 30.0000), (4, 40.0000), +(5, NULL), (6, NULL), (7, 70.0000), (8, 80.0000); +INSERT INTO t2 VALUES +(1,'A'), (2,'B'), (3,'C'), (4,'D'), (5, NULL), (6, NULL), +(7,'E'), (8,'F'), (9,'G'), (10,'H'), (11, NULL), (12, NULL); +set join_cache_level=4; +EXPLAIN +SELECT t2.id,t2.name,t.total_amt +FROM t2 +LEFT JOIN +(SELECT id, sum(amount) total_amt FROM t1 GROUP BY id) AS t +ON t2.id=t.id +WHERE t2.id < 3; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 range PRIMARY PRIMARY 4 NULL 3 Using index condition +1 PRIMARY <derived2> ref key0 key0 5 test.t2.id 2 +2 DERIVED t1 ALL NULL NULL NULL NULL 8 Using temporary; Using filesort +set join_cache_level=default; +DROP TABLE t1,t2; set optimizer_switch=@exit_optimizer_switch; |