Re: Limitation of prepared statement name

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От Tom Lane
Тема Re: Limitation of prepared statement name
Дата
Msg-id 28416.1535473275@sss.pgh.pa.us
обсуждение исходный текст
Ответ на Limitation of prepared statement name  (Flavio Henrique Araque Gurgel <fhagur@gmail.com>)
Ответы Re: Limitation of prepared statement name  (Flavio Henrique Araque Gurgel <fhagur@gmail.com>)
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Flavio Henrique Araque Gurgel <fhagur@gmail.com> writes:
> It seems that naming prepared statements is limited to 63 characters as per
> https://www.postgresql.org/docs/current/static/sql-syntax-lexical.html#SQL-SYNTAX-IDENTIFIERS

Yeah, just like every other SQL identifier in Postgres...

> The dangerous situation is that PostgreSQL seems to ignore rigthmost
> overflowed characters silently.

It's hardly silent:

regression=# prepare foo1234567890123456789012345678901234567890123456789012345678901234567890 as select 1;
NOTICE:  identifier "foo1234567890123456789012345678901234567890123456789012345678901234567890" will be truncated to
"foo123456789012345678901234567890123456789012345678901234567890"
PREPARE

> Wouldn't it be good to include that information on the prepared statement
> doc page?

You could as well argue that every single page that describes creating
any sort of object ought to repeat this information.  I doubt that people
would find that to be an improvement.

            regards, tom lane


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