Microsoft SQL Server forum - Filter Expression

Author

Filter Expression

coosa

2005-05-31, 8:24 pm

Hi

I have some data that need to be filtered based on a SET of Id's.
If it's about a single ID, then i would pass it as a parameter in a
stored procedure and use it within the the WHERE Clause, but here those
ID's are determined in run time and I can't simply create a a stored
procedure for an unknown amount of ID's.
I looked into the SQL Server 8.0 Manual but had no examples how to use
the Function Filter.
Generaly, how can filter some records based on a set of ID's?

Best regards

Erland Sommarskog

2005-05-31, 8:24 pm

coosa (coosa76@gmail.com) writes:
> I have some data that need to be filtered based on a SET of Id's.
> If it's about a single ID, then i would pass it as a parameter in a
> stored procedure and use it within the the WHERE Clause, but here those
> ID's are determined in run time and I can't simply create a a stored
> procedure for an unknown amount of ID's.
> I looked into the SQL Server 8.0 Manual but had no examples how to use
> the Function Filter.
> Generaly, how can filter some records based on a set of ID's?

FROM tbl t
JOIN iter_intlist_to_tbl(
@list_of_ids, DEFAULT) f ON t.id = f.number

iter_intlist_to_tbl is table-valued function that unpacks a space-
separared list of integers into table which you then join with.

Code at http://www.sommarskog.se/arrays-in-...st-of-integers.
The rest of the article provides more discussion about this kind of problem.

--
Erland Sommarskog, SQL Server MVP, esquel@sommarskog.se

Books Online for SQL Server SP3 at
http://www.microsoft.com/sql/techin.../2000/books.asp

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