Hi, folks:

I am maintaining a long list of 20M records, the unique key in this table contains multiple fields and now I need to setup an ID (not sequential numbers, need randomness) for each of these unique records. Currently I am using a sub-string of hexadecimal generated by SHA1 method. This is OK except that the length of ID is too long in order to keep the uniqueness. Is there a way/method in Perl that I can transfer the 20-byte hexadecimal into a shorter string contains [0-9a-z](case insensitive)?

many thanks..

lihao

In reply to Question: methods to transfer a long hexadicimal into shorter string by lihao

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