Question

I have created a table with

CREATE TABLE xy (
blub VARCHAR(50) NOT NULL,
z INT UNSIGNED NOT NULL,
PRIMARY KEY (blub)
)

and want to query many entries at once by the column ‘blub’. Currently I am using the simple query

SELECT blub, z FROM xy WHERE blub = '...'

which is much faster than

SELECT blub, z FROM xy WHERE blub = '...' OR blub = '...' OR '...

Is there any other way to make it faster and to merge all queries?

Answer 1

You can try an in clause. I’m not certain it will be faster, but it will definitely be more succinct. For example:

select blub, z from zy where blub in ('this', 'that', 'theother');

explain will tell you which is actually fastest for your situation.