mysql insert server_id while creating record in table

Question

I have a table in mysql in which records can be created from different servers(servers are configured for master slave replication and server ids of each server has been set to 1, 2, 3 and so on), I wanted to know if there is some way by which I can set the default value of a column to server_id or @@server_id so that I can identify which server has created the record.

I have tried

ALTER TABLE `mytable` 
ADD COLUMN `somecolumn` TINYINT NULL DEFAULT server_id

But the above one is not working.

Answer 1

ALTER TABLE `mytable` 
ADD `somecolumn` TINYINT NULL DEFAULT server_id

try it without ADD COLUMN and just use ADD