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In the my application, i save urls content into specific table of database. to have minimum duplication, i want to compute checksum for each content. so what is best sqlserver data-type for saving checksum’s? and fastest way to computing checksum’s for contents(html) of urls?
SHA1 could be used to calculate the checksum. The result is a byte array which could be stored either as hex string or blob field in SQL but I think for practical reasons a string would be more convenient.