Truncate All Tables Part 2

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Truncate All Tables Part 2

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Jorge Novo-@ETLDEVDBA

Posted Monday, August 18, 2008 4:35 PM

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Comments posted to this topic are about the item Truncate All Tables Part 2

Post #554650

ramu.valleti

Posted Thursday, November 20, 2008 7:54 AM

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Hello there,

when i execute part1 and part2 together the whole query is executing properly, but it is not restoring the FK constraints properly.

can anybody help me on this regard?.....

Thanks&Regards,
Ramu

Ramu
No Dream Is Too Big....!

Post #605830

Jorge Novo-@ETLDEVDBA

Posted Thursday, November 20, 2008 9:01 AM

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What's seems to be the problem

Post #605886

ramu.valleti

Posted Monday, November 24, 2008 9:23 AM

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I've a database which has, two dimension and one fact table.

when i run the script, it is restoring primary keys successfully, but not FK relations in the fact table.

I mean my fact table doesn't hold any relation with the dimension tables after running the script.

Please tell me what might be the problem?.. is it with my database or script?

Regards,
Ramu

Ramu
No Dream Is Too Big....!

Post #607659

Jorge Novo-@ETLDEVDBA

Posted Monday, November 24, 2008 2:22 PM

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One of the problems that I see a lot is that when trying to restore the relationship there are orphans on the tables. Ensure that all the foreign keys from the parent are present on the tables. For example. If table A has ID ( 1,2,3,4,5,6) and a child table B has the FK's (1,4,5,6) After dropping all the constraints we delete the records (5,6) on table A but fail to delete records (5,6) on table B, the script will fail to restore the constraint between Table A and B because now B has FK's (5,6) as orphans. The issue can be many things but I will start to look into the orphan issue First. Can you send the DDL of the tables? or a similar DDL I just want to see the kind of constraint between the tables.

Post #607882

dhearne

Posted Thursday, August 26, 2010 8:18 AM

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Jorge,

This is great stuff!

However, it seems as though the restore portion does not correctly restore relationships that are based on more than one column.

I think there needs to be a loop in the dynamic sql section that will iterate through the values in the sysforeignkeys.keyno field. You capture that data in the first part, but do not appear to use it in the restore process.

If I am incorrect, my sincerest apologies. I ask only because I would hate to lose the multi-column FK relationships on my databases!

-Dave

Post #975679

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