increase counter while using exec - sql

Question

I want to use a counter in a way like the below one:
exec
('begin insert into ' + #temp07 + ' (FileID,FileName)
Select aof_id,aof_fileName from PaFi07(' + #partId + ');
sp_executesql #sqlCounter, N'#intCount int output, #intConst int, #intCount = #intCount output, #intConst = #intConst
end')
so how can i let the counter work?
any suggestion that the counter work inside this EXEC command
THANX

Answer 1

You cannot EXEC them as EXEC runs in its own scope so the variable identifiers have no meaning.
You can instead declare them as ints, pass them to sp_executesql along with a statement string and return the result as an output;
declare #sql nvarchar(256) = 'SET #intCount = #intCount + #intConst'
EXEC sp_executesql #sql,
N'#intCount int output, #intConst int',
#intCount = #intCount output,
#intConst = #intConst
select #intCount
>6

Answer 2

There are several errors in your snippet:
First of all, you are declaring your variables as varchar(10), while you are intending to use them as numbers. They should be declared as smallint, int or bigint.
Then you are composing a string using those varchar variables and trying to add 1 to the value stored in #inCount with an addition of the number 1.
Since your variables are strings and not numbers, the + symbols tries to concatenate them.
To realize about your error, first, you should convert the number 1 to a string, writing the EXEC like this:
exec ('SET ' + #intCount + ' = ' + #intCount + '1')
Once you have done that, just remove the EXEC and assign the string you are concatenating to a new string variable. So:
DECLARE #composedQuery varchar(1000)
SET #composedQuery = 'SET ' + #intCount + ' = ' + #intCount + '1'
SELECT #composedQuery
You will see a result like this:
SET 5 = 51
For sure, this is not what you are intending to execute with EXEC, isn't it? :)
The correct solution has been given to you in other answers. I rewrite the full snippet:
declare #intCount int
declare #intConst int
set #intCount = 5
set #intConst = 1
SET #intCount = #intCount + 1
--OR
SET #intCount = #intCount + #intConst

Answer 3

You don't need exec for that:
set #inCount = #intCount + #intConst
If you want to use exec, you would use the name of the variables in the string, not the values:
exec('set #inCount = #intCount + #intConst')
Edit:
For the new question; you would concatenate the values into the string:
exec
('begin insert into ' + #temp07 + ' (FileID,FileName)
Select aof_id,aof_fileName from PaFi07(' + #partId + ');
sp_executesql #sqlCounter, N'#intCount int output, #intConst int, #intCount = ' + #intCount + ' output, #intConst = ' + #intConst + ' end')
If they are numeric values you would need to cast them:
... + cast(#intCount as varchar) + ...