How can one iterate over stored procedure results from within another stored procedure…without cursors?

Question

I\'m not sure if this is something I should do in T-SQL or not, and I\'m pretty sure using the word \'iterate\' was wrong in this context, since you should never iterate any

Answer 1

You can use a temp table or table variable with an additional column:

DECLARE @MyTable TABLE (
    Column1 uniqueidentifer,
    ...,
    Checked bit
)

INSERT INTO @MyTable
SELECT [...], 0 FROM MyTable WHERE [...]

DECLARE @Continue bit
SET @Continue = 1
WHILE (@Continue)
BEGIN
    SELECT @var1 = Column1,
           @var2 = Column2,
           ...
    FROM @MyTable
    WHERE Checked = 1

    IF @var1 IS NULL
        SET @Continue = 0
    ELSE
    BEGIN

        ...

        UPDATE @MyTable SET Checked = 1 WHERE Column1 = @var1
    END
END

Edit: Actually, in your situation a join will be better; the code above is a cursorless iteration, which is overkill for your situation.