BUG#671361: virtual int Mrr_ordered_index_reader::refill_buffer(): Assertion `!know_key_tuple_params

- Make sure we have enough space for both rowids and keys.

1 files changed, 37 insertions, 0 deletions

diff --git a/mysql-test/r/maria_mrr.result b/mysql-test/r/maria_mrr.result
index 3b43f4f17d2..9153d795a17 100644
--- a/mysql-test/r/maria_mrr.result
+++ b/mysql-test/r/maria_mrr.result
@@ -365,3 +365,40 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t2	ALL	PRIMARY,idx	NULL	NULL	NULL	16	Using where; Using join buffer (flat, BNL join)
 1	SIMPLE	t3	ref	PRIMARY,idx	idx	3	test.t2.v	2	Using index condition; Using where
 DROP TABLE t1,t2,t3;
+#
+# BUG#671361: virtual int Mrr_ordered_index_reader::refill_buffer(): Assertion `!know_key_tuple_params
+# (works only on Maria because we need 1024-byte long key)
+#
+SET SESSION optimizer_use_mrr = 'force';
+SET SESSION join_cache_level = 6;
+SET SESSION join_buffer_size = 1024;
+CREATE TABLE t1 (
+pk int(11) NOT NULL AUTO_INCREMENT,
+col_varchar_1024_latin1_key varchar(1024) DEFAULT NULL,
+PRIMARY KEY (pk),
+KEY col_varchar_1024_latin1_key (col_varchar_1024_latin1_key)
+) ENGINE=Aria;
+INSERT INTO t1 VALUES
+(1,'z'),
+(2,'abcdefjhjkl'),
+(3,'in'),
+(4,'abcdefjhjkl'),
+(6,'abcdefjhjkl');
+CREATE TABLE t2 (
+col_varchar_10_latin1 varchar(10) DEFAULT NULL
+) ENGINE=Aria;
+INSERT INTO t2 VALUES ('foo'), ('foo');
+EXPLAIN SELECT count(*)
+FROM t1 AS table1, t2 AS table2
+WHERE
+table1.col_varchar_1024_latin1_key = table2.col_varchar_10_latin1 AND table1.pk<>0 ;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	table2	ALL	NULL	NULL	NULL	NULL	2	Using where
+1	SIMPLE	table1	ref	PRIMARY,col_varchar_1024_latin1_key	col_varchar_1024_latin1_key	1027	test.table2.col_varchar_10_latin1	2	Using index condition(BKA); Using where; Using join buffer (flat, BKA join)
+SELECT count(*)
+FROM t1 AS table1, t2 AS table2
+WHERE
+table1.col_varchar_1024_latin1_key = table2.col_varchar_10_latin1 AND table1.pk<>0 ;
+count(*)
+0
+drop table t1, t2;