MySQL IN 条件限制

Question

Hey, I have to use IN condition in my MySQL statement with a large set of ids.

Example

SELECT * FROM users WHERE id IN (1,2,3,4...100000)

Is there a limit if items the IN statement can have?

Answer 1

No there isn't, check the manual about the IN function :

The number of values in the IN list is only limited by the max_allowed_packet value.

Answer 2

As far as I know in mysql, there is no limit for items in the IN statement.

In oracle altough, there is a limit of 1000 items in the IN statement.

But more the items in IN , your query performance will slow down unless that column is indexed.

Answer 3

1073741824 This is the limit given in Mysql docs