Hi, here is the problem...
I must create a store procedure that do the following...
1. select id_name,...'som e other field' from table 'data' where 'criteria' =
@parameter
2. use the result of the first selection to create another selection
combining that results with the table 'name' where id_name is null in the
result selection...
In other word I have a first query that use a passed parameter, the result
of that query should be combined this another query, and the result should
be return from the store procedure...
I can't realize how to write this 'simple' problem... can anyone help me?
Many thanks,
Alex
2  2368 
Alessandro (gi******@tisca li.it) writes: I must create a store procedure that do the following...
1. select id_name,...'som e other field' from table 'data' where
'criteria' = @parameter
2. use the result of the first selection to create another selection
combining that results with the table 'name' where id_name is null in the
result selection...
In other word I have a first query that use a passed parameter, the result
of that query should be combined this another query, and the result should
be return from the store procedure...
A simple solution is to use temp tables or table variables.
However, of you often can do this with a derived table, which conceptually
can be seen as a temp table, but physically it is never materialized.
Here is an example:
SELECT C.*
FROM Northwind..Cust omers C
JOIN (SELECT CustomerID
FROM Northwind..Orde rs
GROUP BY CustomerID
HAVING COUNT(*) > 20) O ON C.CustomerID = O.CustomerID
Lists all customer informations about customers that have placed more than
20 orders.
--
Erland Sommarskog, SQL Server MVP, so****@algonet. se
Books Online for SQL Server SP3 at http://www.microsoft.com/sql/techinf...2000/books.asp
"Alessandro " <gi******@tisca li.it> wrote in message news:<g8******* ************@to rnado.fastwebne t.it>... Hi, here is the problem...
....
I can't realize how to write this 'simple' problem... can anyone help me?
Many thanks,
Alex
Hi Alex.. to work with SQL , query and paramter look at this site : Http://www.RealTimeInformatica.it/Stany
Bye Bye ...
ps: è anche in Italiano !;) This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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Hi, here is the problem...
I must create a store procedure that do the following...
1. select id_name,...'some other field' from table 'data' where 'criteria' =
@parameter
2. use the result of the first selection to create another selection
combining that results with the table 'name' where id_name is null in the
result selection...
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