On 09/19/2013 12:13 AM, Juan Daniel Santana Rodés wrote:
Hi my friends...
I wrote in the last post a question similiar to this. But in this post
I clarify better the previous question.
I need know how to evaluated if a query is correct without execute it.
When I say if a query is correct, is that if I run the query, it did
not throw an exception.
For example...
create or replace function is_correct(query text) returns boolean as
$body$
Declare
Begin
-- Here I check if the query is correct, but I can't execute this
query, because it may make changes in the data base
End;
$body$
language 'plpgsql';
Greetings
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Is this an academic exercise or are you actually planning on checking
sql then executing it if it's ok (according to your function). I love
plpgsql but I don't think it's the best option for, just to get started,
parsing the incoming sql text - that would be one nasty regexp :)
rjs
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