Question

I must create a mysql query with a large number of queries (about 150,000)

For the moment the query is:

UPDATE table SET activated=NULL
WHERE (
        id=XXXX
    OR  id=YYYY 
    OR  id=ZZZZ 
    OR  id=...
    ...
)
AND activated IS NOT NULL

Do you know a best way for to do that please?

Answer 1

If you’re talking about thousands of items, an IN clause probably isn’t going to work. In that case you would want to insert the items into a temporary table, then join with it for the update, like so:

UPDATE table tb
JOIN temptable ids ON ids.id = tb.id
SET tb.activated = NULL