any irreplaceable objects, this will yield undesirable results.
    </P
><P
>     To check for unexpected update paths, use this command:
</P><PRE
CLASS="PROGRAMLISTING"
>SELECT * FROM pg_extension_update_paths('<TT
CLASS="REPLACEABLE"
><I
>extension_name</I
></TT
>');</PRE
><P>
     This shows each pair of distinct known version names for the specified
     extension, together with the update path sequence that would be taken to
     get from the source version to the target version, or <TT
CLASS="LITERAL"