Match first byte in string?

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VB

Hello I need some advice to compare only the first and second byte of a string and if no match is found, then go to the next string.

I know of the booyer moore horspool string matching algorithm and have successfully used it within one of my applications but now that I am reading strings from a database I feel that the data reader is sufficient or just as quick.

I would be very happy to know if its possible to store your data in a database to then use the booyer moore string matching algorithum to find the match in the database. Hope your following me here

would this approach be faster or slower?
if yes or no please give some kind of example of a match by first byte or database booyer moore search


thank you in advance!!
VB.NET