Database Function giving an error - Postgresql

问题

I had some help on here and got the following code:

-- Setup Solrid Function
CREATE OR REPLACE FUNCTION solrid(IN local_id INTEGER, OUT result TEXT) AS $$
DECLARE
  database_id TEXT := 'A';
BEGIN
  result := database_id || local_id::TEXT;
END;
$$ LANGUAGE PLPGSQL;

However when I run it in sqlfiddle it says:

Schema Creation Failed: ERROR: unterminated dollar-quoted string at or near "$$ DECLARE database_id TEXT := 'A'":

This error may seem pretty self explanatory but I can't figure out the way to fix it. Would anyone mind shedding some light on this please?

回答1:

There is absolutely nothing wrong with this function, it is 100 % legit. I tested with 8.4 and 9.1 in my installation.

There must be some kind of misunderstanding. This cannot be exactly the same code that triggers the error message.

来源：https://stackoverflow.com/questions/14711103/database-function-giving-an-error-postgresql