Re: 9.5 Create Function Set From Current taken at creation time?
От | David G. Johnston |
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Тема | Re: 9.5 Create Function Set From Current taken at creation time? |
Дата | |
Msg-id | CAKFQuwYVPyk9BnhDgHi27kPWd4SJp0Ko3ihqDf5SQE-4-iN_Zw@mail.gmail.com обсуждение исходный текст |
Ответ на | Re: 9.5 Create Function Set From Current taken at creation time? (Tom Lane <tgl@sss.pgh.pa.us>) |
Ответы |
Re: 9.5 Create Function Set From Current taken at creation time?
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Список | pgsql-bugs |
On Tue, Aug 9, 2016 at 9:43 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote: > "David G. Johnston" <david.g.johnston@gmail.com> writes: > > Can we change the second sentence in the above quote to something like:= =E2=80=8B > > > SET FROM CURRENT is a convenience expression to capture the result of > > current_setting('setting name') at the time of the function's creation. > [if > > more than just convenience an example of when this is useful would be > nice]. > > "Convenience" normally means that there's some other way to get the same > result. I do not know of one, and I doubt we'd have introduced the > feature if there was. > Fair enough...=E2=80=8Bso: SET FROM CURRENT saves the =E2=80=8B[creating] =E2=80=8B session's current value of the parameter as the value to be applied when the function is entered. =E2=80=8BDavid J. =E2=80=8B
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