Provided by: postgresql-client-9.1_9.1.3-2_i386 bug

NAME

       CREATE_CONVERSION - define a new encoding conversion

SYNOPSIS

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

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.

       function_name
           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, but a CREATE TRANSLATION
       statement that is very similar in purpose and syntax.

SEE ALSO

       ALTER CONVERSION (ALTER_CONVERSION(7)), CREATE FUNCTION
       (CREATE_FUNCTION(7)), DROP CONVERSION (DROP_CONVERSION(7))