r)
       </P
><P
>        This prevents queries that call these functions from returning
        errors immediately after a concurrent <TT
CLASS="COMMAND"
>DROP</TT
>.
       </P
></LI
><LI
><P
>        Make <A
HREF="functions-datetime.html#FUNCTIONS-DATETIME-EXTRACT"
><CODE
CLASS="FUNCTION"
>EXTRACT(EPOCH FROM
        <TT
CLASS="REPLACEABLE"
><I
>timestamp without time zone</I
></TT
>)</CODE
></A
>
        measure the epoch from local midnight, not <ACRONYM
CLASS="ACRONYM"
>UTC</ACRONYM
>
        midnight