What are the relative merits of each? Both seem to limit the number of rows and columns through which your query needs to trawl, so what determines the basis for choosing one over the other?What are the relative merits of each? Both seem
What are the relative merits of each? Both seem to limit the number of rows and columns through which your query needs to trawl, so what determines the basis for choosing one over the other?What are the relative merits of each? Both seem