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Re: Auto incrementing primary keys

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On Feb 18, 2008, at 9:56 AM, Raymond O'Donnell wrote:

On 18/02/2008 17:46, Raymond O'Donnell wrote:

Well, that depends on your usage, so only you can answer that. According to the docs, "serial" creates an integer column, which will give you 2147483647 values - how quickly will you use that lot up? If you think you will run out, by all means use bigserial.

Actually, that isn't quite right - just looked at the docs for CREATE SEQUENCE, and the default maximum value is 2^63-1.

That's the maximum value for the sequence itself, but a "serial" is just an integer, so the 2^31-1 limit before wraparound still applies.

Cheers,
  Steve


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