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MS SQL - Synchronize 2 tables definition

Posted on 2015-02-09
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Last Modified: 2015-02-13
Hi,
Is there any stored procedure that can help to synchronize 2 tables definitions?
Let say I have table A and I want fields in table B (not existing in table A) to be added to table A.
And if any datatype change is picked up on common fields, adjust fields in table A
Only at table definition.
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Question by:Omer-Pitou
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Scott Pletcher earned 250 total points
ID: 40599562
No, there's no system procedure that comes with SQL Server that would do that for you.  It would have to be custom code.
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by:PortletPaul
ID: 40600029
and good luck with automating "And if any datatype change is picked up on common fields, adjust fields in table A"

How broad is that requirement.

e.g. From varchar to datetime? From varchar(250) to varchar(4)? (both are likely to have exceptions in the data)
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by:Omer-Pitou
ID: 40600043
It can be done. In this case you can force the column to be truncated. It is just a lot of coding.
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by:Vitor Montalvão
Vitor Montalvão earned 250 total points
ID: 40600943
It can be done. In this case you can force the column to be truncated. It is just a lot of coding.
Yes it can be done and maybe with less coding that you think. Check for DDL triggers. Here's a starting point for you:
CREATE TRIGGER TableChanges
ON DATABASE 
FOR ALTER_TABLE 
AS 
   (...)

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