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 Transact-SQL (2005)
 Delete from multiple table at once in sql server
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kamii47
Constraint Violating Yak Guru

352 Posts

Posted - 09/09/2013 :  09:43:47  Show Profile  Reply with Quote
Can i Delete from multiple tables at once in sql server
I think something like this is available in mysql

Delete fe ,fd, fa,sf, sfsm
From dbo.FieldEnumeration As fe
Inner Join dbo.FieldDependency As fd
On fe.FieldEnumerationId = fd.FkFieldEnumerationId
Inner Join dbo.SimpleFieldDetail As sf
On fe.FkSimpleFieldDetailId = sf.SimpleFieldDetailId
Inner Join dbo.FieldAttributes As fa
On sf.SimpleFieldDetailId = fa.FkSimpleFieldDetailId
Inner Join dbo.SimpleFieldSectionMapper sfsm
On fd.ChildFieldId = sfsm.SimpleFieldSectionMappingId
And sf.SimpleFieldDetailId = sfsm.FkSimpleFieldDetailId
Inner Join dbo.SourceSection
On dbo.SimpleFieldSectionMapper.FkSourceSectionId = dbo.SourceSection.SourceSectionId
Inner Join dbo.TemplateSource
On dbo.SourceSection.FkTemplateSourceId = dbo.TemplateSource.TemplateSourceId
Inner Join dbo.Template tm
On dbo.TemplateSource.FkTemplateId = tm.TemplateId
Where tm.TemplateId = 1

Any idea how easily i can do this

Kamran Shahid
Principle Engineer Development
(MCSD.Net,MCPD.net)

James K
Flowing Fount of Yak Knowledge

3557 Posts

Posted - 09/09/2013 :  10:26:26  Show Profile  Reply with Quote
T-SQL does not allow you to delete from multiple tables in one delete statement. If you want to preserve the atomicity of the deletions, the recommended way is to use a try-catch block and an explicit transaction.

You can use joins to pick up the rows that you want to delete, but the deletion has to be targeted at a single table.

T-SQL also supports cascade deletes - i.e., when you delete data from a table, you can set it up such that rows in other tables that are dependent on the row to be deleted via foreign key constraints will also get deleted.

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kamii47
Constraint Violating Yak Guru

352 Posts

Posted - 09/10/2013 :  01:07:57  Show Profile  Reply with Quote
I know about the cascade delete but at the moment i needed the deletion with manual query. Could u help translating the above query into separate deletion queries.
I know i might needed the temprorary table to first select the ids into them then delete one by one


Kamran Shahid
Principle Engineer Development
(MCSD.Net,MCPD.net)


Edited by - kamii47 on 09/10/2013 01:26:07
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