Provided by: postgresql-client-8.3_8.3.8-1_i386 bug

NAME

       CREATE CONVERSION - define a new encoding conversion

SYNOPSIS

       CREATE [ DEFAULT ] CONVERSION name
           FOR source_encoding TO dest_encoding FROM funcname

DESCRIPTION

       CREATE  CONVERSION  defines  a  new  conversion  between  character set
       encodings. Also, conversions that are marked DEFAULT can  be  used  for
       automatic  encoding  conversion  between  client  and  server. For this
       purpose, two conversions, from encoding A to B and from encoding  B  to
       A, must be defined.

       To  be  able to create a conversion, you must have EXECUTE privilege on
       the function and CREATE privilege on the destination schema.

PARAMETERS

       DEFAULT
              The DEFAULT clause indicates that this conversion is the default
              for this particular source to destination encoding. There should
              be only one default encoding in a schema for the encoding  pair.

       name   The  name  of the conversion. The conversion name can be schema-
              qualified. If it is  not,  the  conversion  is  defined  in  the
              current  schema.  The  conversion  name  must be unique within a
              schema.

       source_encoding
              The source encoding name.

       dest_encoding
              The destination encoding name.

       funcname
              The function used to perform the conversion. The  function  name
              can  be  schema-qualified.  If  it  is not, the function will be
              looked up in the path.

              The function must have the following signature:

              conv_proc(
                  integer,  -- source encoding ID
                  integer,  -- destination encoding ID
                  cstring,  -- source string (null terminated C string)
                  internal, -- destination (fill with a null terminated C string)
                  integer   -- source string length
              ) RETURNS void;

NOTES

       Use DROP CONVERSION to remove user-defined conversions.

       The privileges required to create a conversion might be  changed  in  a
       future release.

EXAMPLES

       To create a conversion from encoding UTF8 to LATIN1 using myfunc:

       CREATE CONVERSION myconv FOR ’UTF8’ TO ’LATIN1’ FROM myfunc;

COMPATIBILITY

       CREATE  CONVERSION  is  a  PostgreSQL  extension.   There  is no CREATE
       CONVERSION statement in the SQL standard.

SEE ALSO

       ALTER     CONVERSION     [alter_conversion(7)],     CREATE     FUNCTION
       [create_function(l)], DROP CONVERSION [drop_conversion(l)]