cartodb-postgresql/scripts-available/CDB_Conf.sql

-- This will trigger NOTICE if CDB_CONF already exists
DO LANGUAGE 'plpgsql' $$
BEGIN
    CREATE TABLE IF NOT EXISTS CDB_CONF ( PARAM TEXT PRIMARY KEY, VALUE TEXT NOT NULL );
END
$$;

CREATE OR REPLACE
FUNCTION cartodb.CDB_Conf_SetParam(param text, value text)
    RETURNS void AS $$
BEGIN
    PERFORM cartodb.CDB_Conf_RemoveParam(param);
    EXECUTE 'INSERT INTO CDB_CONF (PARAM, VALUE) VALUES ($1, $2);' USING param, value;
END
$$ LANGUAGE PLPGSQL VOLATILE;

CREATE OR REPLACE
FUNCTION cartodb.CDB_Conf_RemoveParam(param text)
    RETURNS void AS $$
BEGIN
    EXECUTE 'DELETE FROM CDB_CONF WHERE PARAM = $1;' USING param;
END
$$ LANGUAGE PLPGSQL VOLATILE;

CREATE OR REPLACE
FUNCTION cartodb.CDB_Conf_GetParam(param text)
    RETURNS TEXT AS $$
DECLARE
    value TEXT;
BEGIN
    EXECUTE 'SELECT VALUE FROM CDB_CONF WHERE PARAM = $1;' INTO value USING param;
    RETURN value;
END
$$ LANGUAGE PLPGSQL STABLE;