Looping through multiple dbs in a view

Question

Looping through multiple dbs in a view

Guras

SSCertifiable

Points: 6518
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November 21, 2013 at 7:17 am

#301566

CREATE VIEW [dbo].[VW_PERSON_DETAIL]
AS
SELECT p.PTNO, p.[NAME], p.SSN FROM table1 p
INNER JOIN table2 c ON p.idcode = c.idcode
WHERE c.RV = 1
I need to loop thorugh all the dbs in the server since table1 ( same shema) exists in all the dbs.
How can I rewrite this view to loop through the multiple dbs?
Thanks

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Gail Shaw SSC Guru Points: 1004504 More actions · Answer 1

Views can only be single SELECT statements. If you need looping or anything more than SELECT ... then consider a stored procedure.

Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

We walk in the dark places no others will enter
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Lowell SSC Guru Points: 323504 More actions · Answer 2

with a set list of databases, you could create a view that does multi database calls like this:

CREATE VIEW [dbo].[VW_PERSON_DETAIL]

AS

SELECT

'Database1' AS DB,

p.PTNO,

p.[NAME],

p.SSN

FROM Database1.dbo.table1 p

INNER JOIN Database1.dbo.table2 c

ON p.idcode = c.idcode

WHERE c.RV = 1

UNION ALL

SELECT

'Database2' AS DB,

p.PTNO,

p.[NAME],

p.SSN

FROM Database2.dbo.table1 p

INNER JOIN Database2.dbo.table2 c

ON p.idcode = c.idcode

WHERE c.RV = 1

UNION ALL

SELECT

'Database3' AS DB,

p.PTNO,

p.[NAME],

p.SSN

FROM Database3.dbo.table1 p

INNER JOIN Database3.dbo.table2 c

ON p.idcode = c.idcode

WHERE c.RV = 1

Lowell

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