From: | Kevin Jenkins <gameprogrammer(at)rakkar(dot)org> |
---|---|
To: | |
Cc: | pgsql-sql(at)postgresql(dot)org |
Subject: | Re: How to test/read a stored procedure that returns a boolean? |
Date: | 2008-01-16 23:50:41 |
Message-ID: | 478E9851.9020905@rakkar.org |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-sql |
Thanks Tom!
Also, how do I check if a language is already created so I don't load
it twice?
"ERROR: language "plpgsql" already exists
SQL state: 42710"
Here is the code fixed.
/*
CREATE LANGUAGE 'plpgsql' HANDLER plpgsql_call_handler
LANCOMPILER 'PL/pgSQL';
CREATE TABLE handles (
handleID_pk serial PRIMARY KEY UNIQUE NOT NULL,
userID_fk integer UNIQUE NOT NULL,
handle text UNIQUE NOT NULL);
CREATE TABLE disallowedHandles (
handle text UNIQUE NOT NULL);
*/
create or replace function IsUsedHandle(h text) returns boolean as $$
declare
num_matches integer;
begin
num_matches := COUNT(*) from handles where handles.handle = h;
return num_matches > 0;
end;
$$ LANGUAGE plpgsql;
-- INSERT INTO handles (handle, userid_fk) VALUES ('blah', 0);
select * from IsUsedHandle('blah');
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