nt name error details.  Previously such information had to be
        extracted from error strings.  Client library support is required to
        access these fields.
       </P
></LI
></UL
><DIV
CLASS="SECT4"
><H4
CLASS="SECT4"
><A
NAME="AEN114527"
>E.2.3.4.1. <TT
CLASS="COMMAND"
>ALTER</TT
></A
></H4
><P
></P
><UL
><LI
><P
>        Support <TT
CLASS="LITERAL"
>IF NOT EXISTS</TT
> option in <A
HREF="sql-altertype.html"
><TT
CLASS="COMMAND"
>ALTER TYPE ... ADD VALUE</TT
></A
>
        (Andrew Dunstan)
    