Is There a Limit to the Number of Values in a MySQL IN Condition?

MySQL IN Condition: Understanding the Limit

When utilizing the IN condition in MySQL statements, you may have concerns about limitations on the number of items it can include. To clarify, MySQL imposes no explicit limit on the number of values in the IN list. This is evident in the official MySQL documentation, which states: "The number of values in the IN list is only limited by the max_allowed_packet value."

The max_allowed_packet variable defines the maximum size (in bytes) of packets that can be sent from the client to the server. The default value for this variable is typically set to 4MB. However, it can be adjusted to accommodate larger packet sizes.

So, as long as the combined size of all the values in the IN list does not exceed the max_allowed_packet value, you can include as many items as necessary without encountering any limits.

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