Call a SPROC from within a Select Query

I have a select statement that I need to call a SPROC and return a value as one of the values

I have a SPROC called DB_ext.dbo.uspCalcAvgLeadTime that I need to pass a product Item Number (iv2.itemnmbr)

Below is the statement I'm trying to use, what am I doing wrong?

Thanks as always

select iv2.itemnmbr
      ,iv1.itemdesc
      ,iv2.ORDRPNTQTY
      , exec DB_ext.dbo.uspCalcAvgLeadTime(iv2.itemnmbr) as CalcAverageLeadTime
      ,iv3.planningleadtime
      , iv1.itemtype
from iv00101 iv1
join iv00102 iv2 on iv2.itemnmbr=iv1.itemnmbr
      and iv2.locncode='LOCAL'
left join iv00103 iv3 on iv3.itemnmbr=iv1.itemnmbr
      and iv3.vendorid=iv2.primvndr
where iv2.ORDRPNTQTY>0
      and iv1.itemtype<>'2'
jdr0606Asked:
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Koen Van WielinkBusiness Intelligence SpecialistCommented:
Stored procedures cannot be called from within a select statement. If you have to use a stored procedure, you have to call it separately, from within a cursor for example. The idea would be to store your normal select values in a temp table with an empty column for the value returned by the stored procedure. After that, you run a cursor over your temp table and update each row with the value returned by the stored procedure. This is not very efficient however.
You might want to consider changing your procedure to a function instead. Functions can be put inside a select clause.
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HuaMin ChenProblem resolverCommented:
One SP cannot be called within Select statement, or you should change the SP into a function and retry.
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Microsoft SQL Server 2005

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