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><H1
><A
NAME="SQL-DROPCAST"
></A
>DROP CAST</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN73339"
></A
><H2
>Name</H2
>DROP CAST&nbsp;--&nbsp;remove a cast</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN73344"
></A
><H2
>Synopsis</H2
><PRE
CLASS="SYNOPSIS"
>DROP CAST [ IF EXISTS ] (<TT
CLASS="REPLACEABLE"
><I
>source_type</I
></TT
> AS <TT
CLASS="REPLACEABLE"
><I
>target_type</I
></TT
>) [ CASCADE | RESTRICT ]</PRE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="SQL-DROPCAST-DESCRIPTION"
></A
><H2
>Description</H2
><P
>   <TT
CLASS="COMMAND"
>DROP CAST</TT
> removes a previously defined cast.
  </P
><P
>   To be able to drop a cast, you must own the source or the target
   data type.  These are the same privileges that are required to
   create a cast.
  </P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN73353"
></A
><H2
>Parameters</H2
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
><TT
CLASS="LITERAL"
>IF EXISTS</TT
></DT
><DD
><P
>      Do not throw an error if the cast does not exist. A notice is issued
      in this case.
     </P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>source_type</I
></TT
></DT
><DD
><P
>       The name of the source data type of the cast.
      </P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>target_type</I
></TT
></DT
><DD
><P
>       The name of the target data type of the cast.
      </P
></DD
><DT
><TT
CLASS="LITERAL"
>CASCADE</TT
><BR><TT
CLASS="LITERAL"
>RESTRICT</TT
></DT
><DD
><P
>       These key words do not have any effect, since there are no
       dependencies on casts.
      </P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="SQL-DROPCAST-EXAMPLES"
></A
><H2
>Examples</H2
><P
>   To drop the cast from type <TT
CLASS="TYPE"
>text</TT
> to type <TT
CLASS="TYPE"
>int</TT
>:
</P><PRE
CLASS="PROGRAMLISTING"
>DROP CAST (text AS int);</PRE
><P></P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="SQL-DROPCAST-COMPAT"
></A
><H2
>Compatibility</H2
><P
>   The <TT
CLASS="COMMAND"
>DROP CAST</TT
> command conforms to the SQL standard.
  </P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN73388"
></A
><H2
>See Also</H2
><A
HREF="sql-createcast.html"
>CREATE CAST</A
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