Bug#10178 - failure to find a row in heap table by concurrent UPDATEs (1960fbcf) · Commits · Software / OSDI20 Artifacts / mariadb

mysql-test/r/heap.result

+4 −4

Original line number	Diff line number	Diff line
		@@ -367,13 +367,13 @@ count(*)
		9
		explain select count(*) from t1 where v='a ';
		id select_type table type possible_keys key key_len ref rows Extra
		1 SIMPLE t1 ref v v 13 const 9 Using where
		1 SIMPLE t1 ref v v 13 const 10 Using where
		explain select count(*) from t1 where c='a ';
		id select_type table type possible_keys key key_len ref rows Extra
		1 SIMPLE t1 ref c c 11 const 9 Using where
		1 SIMPLE t1 ref c c 11 const 10 Using where
		explain select count(*) from t1 where t='a ';
		id select_type table type possible_keys key key_len ref rows Extra
		1 SIMPLE t1 ref t t 13 const 9 Using where
		1 SIMPLE t1 ref t t 13 const 10 Using where
		explain select count(*) from t1 where v like 'a%';
		id select_type table type possible_keys key key_len ref rows Extra
		1 SIMPLE t1 ALL v NULL NULL NULL 271 Using where
		@@ -399,7 +399,7 @@ qq
		a aa
		explain select * from t1 where v='a';
		id select_type table type possible_keys key key_len ref rows Extra
		1 SIMPLE t1 ref v v 13 const 9 Using where
		1 SIMPLE t1 ref v v 13 const 10 Using where
		select v,count(*) from t1 group by v limit 10;
		v count(*)
		a 1

+1 −1

Original line number	Diff line number	Diff line
		@@ -353,8 +353,8 @@ t3 1 a 1 a NULL NULL NULL NULL HASH
		t3 1 a 2 b NULL 13 NULL NULL HASH
		explain select * from t1 ignore key(btree_idx), t3 where t1.name='matt' and t3.a = concat('',t1.name) and t3.b=t1.name;
		id select_type table type possible_keys key key_len ref rows Extra
		1 SIMPLE t3 ref a a 44 const,const 7 Using where
		1 SIMPLE t1 ref heap_idx heap_idx 22 const 7 Using where
		1 SIMPLE t3 ref a a 44 const,const 7 Using where
		drop table t1, t2, t3;
		create temporary table t1 ( a int, index (a) ) engine=memory;
		insert into t1 values (1),(2),(3),(4),(5);