Horton

Re: SQL-standard function body

Pavel Stehule <pavel.stehule@gmail.com>

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From: Pavel Stehule <pavel.stehule@gmail.com>
To: Vik Fearing <vik@postgresfriends.org>
Cc: Robert Haas <robertmhaas@gmail.com>, Tom Lane <tgl@sss.pgh.pa.us>, Peter Eisentraut <peter.eisentraut@2ndquadrant.com>, pgsql-hackers <pgsql-hackers@postgresql.org>
Date: 2020-07-01T20:34:18Z
Lists: pgsql-hackers 
st 1. 7. 2020 v 22:31 odesílatel Vik Fearing <vik@postgresfriends.org>
napsal:

> On 7/1/20 9:32 PM, Pavel Stehule wrote:
> > st 1. 7. 2020 v 20:19 odesílatel Vik Fearing <vik@postgresfriends.org>
> > napsal:
> >
> >> On 7/1/20 3:36 PM, Robert Haas wrote:
> >>> I actually don't have a very clear idea of what the standard has to
> >>> say about SQL-language functions. Does it just say it's a list of
> >>> statements, or does it involve variables and control-flow constructs
> >>> and stuff like that, too?
> >>
> >>
> >> It's either a single sql statement, or a collection of them between
> >> "begin atomic" and "end".  There are no variables or flow control
> >> constructs or anything like that, just as there are no such things
> >> outside of a function.
> >>
> >
> > What is the source of this comment?
>
>
> The SQL Standard.
>

The SQL Standard is really big, and is very possible so I miss this part.
Can you send me a link?

Regards

Pavel


>
> > Maybe we are speaking (and thinking)
> > about different languages.
>
>
> I think so, yes.
>
>
> > I thought the language of SQL functions (ANSI/SQL) is SQL/PSM.
>
>
> That is something else entirely, and not at all what Peter's patch is
> about.
>
-- 
> Vik Fearing
>

Commits

  1. Don't crash on empty statements in SQL-standard function bodies.

  2. psql: Fix line continuation prompts for unbalanced parentheses

  3. Provide query source text when parsing a SQL-standard function body.

  4. Revert "Cope with NULL query string in ExecInitParallelPlan()."

  5. Undo decision to allow pg_proc.prosrc to be NULL.

  6. SQL-standard function body

  7. Move pg_stat_statements query jumbling to core.

  8. Extend SQL function tests lightly