database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-29 05:21:33 +03:00
Code Activity

MDEV-19634: Assertion `0' failed in row_sel_convert_mysql_key_to_innobase, [Warning] InnoDB: Using a partial-field key prefix in search

Browse Source 
For a key with keyparts (k1,k2,k3) , if we are building a range over the keyparts
we should make sure that if min_value/max_value for a keypart is not added to
key buffer then the keyparts following should also not be allowed.
This commit is contained in:
Varun
2019-06-14 12:16:17 +05:30
parent 1e3dc15d62
commit 772c5f3c78
3 changed files with 43 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
mysql-test/main/range_innodb.result
View File

@ -80,3 +80,21 @@ ERROR HY000: Table definition has changed, please retry transaction
DROP TABLE t0,t1;
set @@global.debug_dbug="-d";
set @@optimizer_switch= @optimizer_switch_save;
#
# MDEV-19634: Assertion `0' failed in row_sel_convert_mysql_key_to_innobase,
# [Warning] InnoDB: Using a partial-field key prefix in search
#
CREATE TABLE t1 (
pk INT,
a VARCHAR(1),
b INT,
PRIMARY KEY (pk),
KEY (a,b)
) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1,'a',1),(2,'b',2);
explain SELECT a FROM t1 WHERE pk < 0 AND a <= 'w' and b > 0;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index PRIMARY,a a 9 NULL 2 Using where; Using index
SELECT a FROM t1 WHERE pk < 0 AND a <= 'w' and b > 0;
a
drop table t1;