Re: Curosity question regarding "LOCK" NOWAIT

2012-09-22 06:08 keltezéssel, John R Pierce írta:
> On 09/21/12 7:43 PM, David Johnston wrote:
>> Has there been any discussion regarding adding a time-limited version of NOWAIT, say:
>> “WAITONLY 50” (milliseconds), when dealing the explicit LOCK TABLE or the
>> SELECT…FOR(SHARE|UPDATE) commands?
>
> is this a feature in any other major databases?

Yes, at least Informix has it in the form of SET LOCK MODE TO { NOT WAIT | WAIT [N] }.

> is this in the sql spec?

No.

>
>
> what do you expect to happen if these timeouts expire? return an error, and abort the
> transaction?
>
>


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