Provided by: postgresql-client-8.4_8.4.11-1_amd64 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(7)],  DROP
       CONVERSION [drop_conversion(7)]