using a concatenated string variable in another query - sql

Question

I have a SPROC like this in SQL server which will split a concatenated string ([var1][var2]) and return 2 result set, how do I pass each individual item from the result sets into another #var in my SProc so that I can do this, thanks:
SET #var3 = (select [var1]+[var2]) --Join the result sets values and assign it to another variable
from ...where...
Result sets:
e.g
resultset
----
tbl1
----
[var1]
resultset
----
tbl1
----
[var2]
Query that splits the concatenated string into it's parts:
declare #Str as varchar(100)
set #Str = '[Var1][Var2]'
while (#Str <> '') begin
select LEFT(#Str, CHARINDEX(']', #Str)) as resulttbl
set #Str = SUBSTRING(#Str, CHARINDEX(']', #Str) + 1, LEN(#Str))
end

Answer 1

You could use OUTPUT parameters...
CREATE PROCEUDRE yourSP (#str AS VARCHAR(max), #output1 AS VARCHAR(max) OUTPUT, #output2 AS VARCHAR(max) OUTPUT)
AS
BEGIN
while (#Str <> '') begin
set #output1 = LEFT(#Str, CHARINDEX(']', #Str))
set #Str = SUBSTRING(#Str, CHARINDEX(']', #Str) + 1, LEN(#Str))
end
set #puput2 = #str
END
Then call that SP with bout input and output variables.
DECLARE
#str VARCHAR(max),
#result1 VARCHAR(max),
#result2 VARCHAR(max)
SELECT
#str = '[Var1][Var2]'
EXEC yourSP #str, #result1 OUTPUT, #result2 OUTPUT
SELECT #str, #output1, #output2
Or, you could package it in a table valued function instead of a stored procedure...
SELECT
#output1 = split.value1,
#output2 = split.value2
FROM
dbo.yourFn(#str) AS split
And if you have atable of data to process, this then applows you to use APPLY...
SELECT
source.str,
split.value1,
split.value2
FROM
source
CROSS APPLY
dbo.yourFn(source.str) AS split