带有UDF的存储过程与查询的SQL游标

I'm trying to optimize a stored procedure I'm maintaining, and am wondering if anyone can clue me in to the performance benefits/penalities of the options below. For my solution, I basically need to run a conversion program on an image stored in an IMAGE column in a table. The conversion process lives in an external .EXE file. Here are my options:I'm trying to optimize a stored procedure I'm m