nterpretation of time-sensitive values.  For example there
    is a difference between what these two functions do:

</P><PRE
CLASS="PROGRAMLISTING"
>CREATE FUNCTION logfunc1(logtxt text) RETURNS void AS $$
    BEGIN
        INSERT INTO logtable VALUES (logtxt, 'now');
    END;
$$ LANGUAGE plpgsql;</PRE
><P>

     and:

</P><PRE
CLASS="PROGRAMLISTING"
>CREATE FUNCTION logfunc2(logtxt text) RETURNS void AS $$
    DECLARE
        curtime timestamp;
    BEGIN
        curtime := 'now';
        INSERT INTO logta