Re: [RFC] Add an until-0 loop in psql

2018-04-28 7:36 GMT+02:00 Corey Huinker <corey(dot)huinker(at)gmail(dot)com>:

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>>> What you don't see here is that you're using your psql process's
>>> available open file handles as a stack, and when you hit that limit psql
>>> will fail. If you remove that limit, then you get a bit further before psql
>>> segfaults on you. I think I got ~2700 files deep before that happened. Your
>>> stackage may vary.
>>>
>>> I'm not saying this is a good solution, quite the contrary. I think the
>>> sane solution is right around the corner in Version 11.
>>>
>>> Now if we just had a way of passing parameters into DO blocks...
>>>
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>> I hope so there will be schema (temporal) variables:
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>> create temp variable foo int default 10;
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>> do $$
>> begin
>> for i in 1..foo loop
>> raise notice '%', i;
>> end loop;
>> end;
>> $$;
>>
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> That would be nice too.
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> A while back, somebody explained why implementing parameters in a DO block
> was so hard, but I don't recall why, and the search terms "do" and
> "parameter" don't really narrow things down.
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I did it too. It is not too hard - there was not a agreement on syntax.

can be nice some like CTE

WITH PROCEDURE x(a int, b int) AS ... $$ SELECT x(10);

Maybe Oracle supports this syntax

Pavel

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