How to Reset an MySQL AutoIncrement using a MAX value from another table?

Question

I know this won\'t work, tried it in various forms and failed all times. What is the simplest way to achieve the following result?

ALTER TABLE XYZ AUTO_INCRE         


        

Answer 1

If you really want to do this in MySQL alone, you can just dump the dynamically built alter command to a file on disk and then execute it.

Like so:

select concat('ALTER TABLE XYZ AUTO_INCREMENT = ',max(ID)+1,';') as alter_stmt
into outfile '/tmp/alter_xyz_auto_increment.sql'
from ABC;

\. /tmp/alter_xyz_auto_increment.sql