Call Procedure for each Row without using a cursor and set the row with the result of the procedure

Question

I have this procedure :

CREATE PROC dbo.##HTMLtoMARKDOWN @text nvarchar(500),
                                 @returnText nvarchar(500) output

AS
BEGIN
    DEC         


        

Answer 1

To update rows using a stored procedure, you need cursor:

    DEClARE @akey int, @text NVARCHAR(500),@retText NVARCHAR(500);
    DECLARE  c CURSOR LOCAL FAST_FORWARD FOR SELECT aid, MarkdownMini 
    FROM CloseAsOffTopicReasonTypes;
    OPEN c;
    FETCH NEXT FROM c into @akey, @text;
    WHILE @@FETCH_STATUS=0 BEGIN
        EXEC dbo.##HTMLtoMARKDOWN @TEXT, @retText output;
        UPDATE CloseAsOffTopicReasonTypes 
           SET MarkDown = @retText WHERE aid = @akey;
        FETCH NEXT FROM c into @akey, @text;
    END;
    DEALLOCATE c;

If you intent to return a record set (like select), you need a temp table or in-memory table:

    DECLARE @TMP TABLE (akey int, MarkDown nvarchar(800) );
    SET NOCOUNT ON;
    DEClARE @akey int, @text NVARCHAR(500),@retText NVARCHAR(500);
    DECLARE  c CURSOR LOCAL FAST_FORWARD FOR SELECT aid, MarkdownMini 
           FROM CloseAsOffTopicReasonTypes;
    OPEN c;
    FETCH NEXT FROM c into @akey, @text;
    WHILE @@FETCH_STATUS=0 BEGIN
        EXEC dbo.##HTMLtoMARKDOWN @TEXT, @retText output;
        --UPDATE CloseAsOffTopicReasonTypes SET MarkDown = @retText WHERE aid = @akey;
        INSERT INTO @TMP (akey, MarkDown) values(@akey, @retText);
        FETCH NEXT FROM c into @akey, @text;
    END;
    DEALLOCATE c;
    SET NOCOUNT OFF;
    SELECT * FROM @TMP;

The SET NOCOUNT ON/OFF are required if you want to return the row to a caller such as C#, PHP, where you also want to make above lines into one stored procedure.