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Merge 10.3 into 10.4

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This commit is contained in:
Marko Mäkelä
2020-05-05 20:33:10 +03:00
parent 474290540a 8648b9bed8
commit 2c3c851d2c
165 changed files with 4191 additions and 3448 deletions
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21
mysql-test/main/key.test
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@ -1,6 +1,7 @@
--disable_warnings
drop table if exists t1,t2,t3;
--enable_warnings
--source include/have_sequence.inc
SET SQL_WARNINGS=1;
#
@ -582,3 +583,23 @@ EXPLAIN SELECT a, SUM( b ) FROM t1 FORCE INDEX( a ) GROUP BY a;
SHOW STATUS LIKE 'Last_query_cost';
DROP TABLE t1;
--echo #
--echo # MDEV-21480: Unique key using ref access though eq_ref access can be used
--echo #
create table t1(a int, b int,c int, primary key(a), unique key(b,c));
insert into t1 select seq, seq, seq from seq_1_to_10;
create table t2(a int, b int,c int);
insert into t2 select seq, seq, seq+1 from seq_1_to_100;
EXPLAIN SELECT t1.c, t2.c FROM t1, t2 WHERE t1.b=t2.a and t1.c=t2.b;
SELECT t1.c, t2.c FROM t1, t2 WHERE t1.b=t2.a and t1.c=t2.b;
alter table t1 drop PRIMARY KEY;
alter table t1 add PRIMARY KEY(b,c);
EXPLAIN SELECT t1.c, t2.c FROM t1, t2 WHERE t1.b=t2.a and t1.c=t2.b;
SELECT t1.c, t2.c FROM t1, t2 WHERE t1.b=t2.a and t1.c=t2.b;
drop table t1,t2;