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

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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
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19
mysql-test/main/range_innodb.test
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@ -87,3 +87,22 @@ select * from t1 where a=10 and b=10;
DROP TABLE t0,t1;
set @@global.debug_dbug="-d";
set @@optimizer_switch= @optimizer_switch_save;
--echo #
--echo # MDEV-19634: Assertion `0' failed in row_sel_convert_mysql_key_to_innobase,
--echo # [Warning] InnoDB: Using a partial-field key prefix in search
--echo #
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;
SELECT a FROM t1 WHERE pk < 0 AND a <= 'w' and b > 0;
drop table t1;