Execute stored procedure with parameter from other table - sql

Question

I have a procedure with one parameter, letsay #AssetID int.
I want to select a column value from another table, then use that value as the parameter for this procedure.
I've stored procedure something like this and the table has been filtered with "Where" criteria from #AssetID parameter:
declare #inspectyear as nvarchar(max), #calc as nvarchar(max), #query as nvarchar(max);
set #inspectyear = STUFF((select distinct ',' + quotename(InspectYear) from ##t2 c
for XML path(''), type).value('.','NVARCHAR(MAX)'),1,1,'')
select #calc = ', ' + quotename(Max(InspectYear)) + ' - ' + quotename(Max(InspectYear)-2)
+ ' as Calc1, ' + quotename(Max(InspectYear)) + ' - ' + quotename(min(InspectYear))
+ ' as Calc2' from #t2;
set #query =
';with data as
(
select inspectyear,
partno, Pos, number
from #t2
unpivot
(
number
for Pos in ([Pos1], [Pos2], [Pos3], [Pos4])
) unpvt
)
select * ' + #calc + ' into ##temp
from data
pivot
(
sum(number)
for inspectyear in (' + #inspectyear + ')
) pvt
order by partno';
exec sp_executesql #query = #query;
select * from ##temp;
drop table ##temp;
So I need to create another procedure, for instance:
create procedure spExecmyProc
as
begin
exec spMyProc '#AssetID' -- <-- The parameter took from other table.
go
end
The #date parameter, took from other table.
Is it possible to do that? The result should be only one result.
So far, this is what I did. It works, but the result is not on "one result". It create more than one result if the #AssetID is more than one:
declare #AssetID int;
declare cur CURSOR FOR
select distinct AssetID from myTable
open cur
fetch next from cur into #AssetID
while ##FETCH_STATUS = 0
begin
exec mySPName #AssetID
fetch next from cur into #AssetID
end
close cur
DEALLOCATE cur
Thank you.

Answer 1

I'm not 100% sure I understand what you're trying to achieve, but if you want to be able to be able to run some code on each value of AssetID in mytable, returning just one result for each input value, I think you could use a Scalar-valued Function. Let's pretend that the purpose of your original stored procedure was just to increment the AssetId value by 1 for simplicity - your function could be created like this:
CREATE FUNCTION fnMyFunction (#AssetId INT)
RETURNS INT
AS
BEGIN
DECLARE #return INT
SET #return = #AssetId + 1
RETURN #return
END
If you then have some values in a table:
CREATE TABLE Assets (
AssetId INT
)
INSERT INTO Assets
SELECT 1
UNION
SELECT 2
UNION
SELECT 3
UNION
SELECT 5
UNION
SELECT 7
UNION
SELECT 5
You can call your function on each value you return:
SELECT AssetId,
dbo.fnMyFunction(AssetId) AS AssetIdPlus1
FROM Assets
Which gives these results for my super simple dataset defined above:
/------------------------\
| AssetId | AssetIdPlus1 |
|---------+--------------|
| 1 | 2 |
| 2 | 3 |
| 3 | 4 |
| 5 | 6 |
| 7 | 8 |
| 5 | 6 |
\------------------------/
If you just want to get the result for each unique value of AssetId in your table, then just return the DISTINCT results:
SELECT DISTINCT
AssetId,
dbo.fnMyFunction(AssetId)
FROM Assets
which would give these results for the same dataset above (with just one row for AssetId = 5):
/------------------------\
| AssetId | AssetIdPlus1 |
|---------+--------------|
| 1 | 2 |
| 2 | 3 |
| 3 | 4 |
| 5 | 6 |
| 7 | 8 |
\------------------------/