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Re: Re: Issue with simultaneous MySQL actions

by LanceDeeply (Chaplain)
on Jul 31, 2003 at 22:32 UTC ( [id://279814]=note: print w/replies, xml ) Need Help??


in reply to Re: Issue with simultaneous MySQL actions
in thread Issue with simultaneous MySQL actions

you should consider storing an agent's max id in another table. ( the following is MS-SQL compliant.. your flavor may require something slightly different )

you can quickly create this table like so:

select agent,max(id) into agent_id from tracker group by agent
and then, before running your insert, run a transactioned query to get and set the max id of an agent
begin tran set nocount on update agent_id set ID = ID + 1 where Name = 'abc' select ID from agent_id where Name = 'abc' commit tran
this should ensure you have no ID collissions

HTH!

Update: I just read the auto-incremental part of your post... which pretty much squashes this reply. shame on me.

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