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# MDEV-14429 sql_safe_updates in my.cnf not work
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select @@sql_safe_updates;
@@sql_safe_updates
1
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# MDEV-18304 sql_safe_updates does not work with OR clauses
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create table t1 (a int, b int, primary key (a), key (b));
update t1 set b=2 where a=1 or b=2;
explain update t1 set b=2 where a=1 or b=2;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE
delete from t1 where a=1 or b=2;
explain delete from t1 where a=1 or b=2;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE
insert into t1 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(7,7),(8,8);
explain update t1 set b=2 where a=1 or b=2;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	index_merge	PRIMARY,b	PRIMARY,b	4,5	NULL	2	Using union(PRIMARY,b); Using where; Using buffer
update t1 set b=2 where a=1 or b=2;
set @@optimizer_switch="index_merge=off";
update t1 set b=2 where a=1 or b=2;
ERROR HY000: You are using safe update mode and you tried to update a table without a WHERE that uses a KEY column
delete from t1 where a=1 or b=2;
ERROR HY000: You are using safe update mode and you tried to update a table without a WHERE that uses a KEY column
drop table t1;
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# End of 10.3 tests
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