Re^7: return primary key if duplicate entry exists?


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Re^7: return primary key if duplicate entry exists?

by CountZero (Bishop)

on Jan 24, 2016 at 20:06 UTC ( [id://1153517]=note: print w/replies, xml )

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in reply to Re^6: return primary key if duplicate entry exists?
in thread return primary key if duplicate entry exists?

As I explain below, CRC32 is not a good candidate for a primary key. An auto-incrementing primary key is much better in this case.

CountZero

A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James

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