Re: Fastest string scan

[rbbaird@xxxxxxxxxxx (Rick Baird)]

Denis Robitaille wrote:

> I have an application that display in a subfile a list of all products
> ordered by product number. It shows the product number and the product
> description. The user can request to see only the products that have a
> certain caracter string in their description (Ex: all products with the
> word "ROLLS" in them somewhere). To do that, they type the string to
> look for and the program read the file by product number and, for each,
> scan the description for the string. The string can be anywhere in the
> product description. Currently, i use the SCAN opcode to do the
> scanning. It works great in the test environnement but in production
> (with a lot more products), it is way to slow. I do load the subfile a
> page at a time. I think the delay is due to the SCAN opcode and i am
> thinking of replacing it with the QCLSCAN API. But before going any
> further, i tought i'd ask around. What do you think is the fastest way
> to do this?
> Any help would be apriciated

try SQL or OPNQRYF using the wild card selection (can't remember the
syntax right now)
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