What is maximum query size for mysql?

问题

What is maximum query size for mysql? Some times the server stops working when I fire a too long query.

回答1:

You can check your current server setting with:

   SHOW VARIABLES LIKE 'max_allowed_packet';

This gives you the answer in bytes. for e.g max_allowed_packet=1048576 or 1mb

回答2:

To increase the max_allowed_packet, open

my.ini/my.cnf under [mysqld] section.

Once the change is done you would have to restart the server.

来源：https://stackoverflow.com/questions/16335011/what-is-maximum-query-size-for-mysql