Re: SQL-standard function body

On 7/1/20 9:32 PM, Pavel Stehule wrote:
> st 1. 7. 2020 v 20:19 odesílatel Vik Fearing <vik(at)postgresfriends(dot)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.

> 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