Also keep in mind that the B tables have sub tables if you actually have
any attachments.  You will find B<schema ID>H<field ID>,

If you don't catch those also you might find yourself with some data left
over.

HTH,

Brian Goralczyk


On Thu, Jan 9, 2014 at 3:02 PM, Grooms, Frederick W <
frederick.w.gro...@xo.com> wrote:

> **
>
> We do it with a truncate table SQL command (since we want to delete
> everything)
>
> Simply find your schema ID for the form in question and Truncate the T, H,
> and B tables for that ID
>
>
>
> Fred
>
>
>
>
>
> *From:* Action Request System discussion list(ARSList) [mailto:
> arslist@ARSLIST.ORG] *On Behalf Of *Cecil, Ken
> *Sent:* Thursday, January 09, 2014 2:58 PM
> *To:* arslist@ARSLIST.ORG
>
> *Subject:* Cleaning up forms before migration
>
>
>
> **
>
> We have some backend forms with large amounts of data that we don’t care
> about and would like to delete before doing a data migration.
>
>
>
> For example FB:History has over 160 million records. What is the best way
> to go about deleting data out of the forms that have gotten away from us.
>
>
>
> I know we should have set up escalations or archiving to prevent this.
>
>
>
> Obviously deleting them through search and delete is out of the question.
> If I set up an escalation to do it I think it would kill performance or
> take forever. How do you guys go about it.  Risky SQL?
>
>
>
> Thanks,
>
>
>
> Ken Cecil
>
>
>
>
>
>
>  _ARSlist: "Where the Answers Are" and have been for 20 years_

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