create_conversion(7) [suse man page]

CREATE 
CONVERSION(7)						   SQL Commands 					      CREATE CONVERSION(7)

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 auto-
       matic 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)]

SQL - Language Statements					    2010-05-14						      CREATE CONVERSION(7)

CREATE CONSTRAINT 
TRIGGER(7)					   SQL Commands 				      CREATE CONSTRAINT TRIGGER(7)

NAME

       CREATE CONSTRAINT TRIGGER - define a new constraint trigger

SYNOPSIS

       CREATE CONSTRAINT TRIGGER name
	   AFTER event [ OR ... ]
	   ON table_name
	   [ FROM referenced_table_name ]
	   { NOT DEFERRABLE | [ DEFERRABLE ] { INITIALLY IMMEDIATE | INITIALLY DEFERRED } }
	   FOR EACH ROW
	   EXECUTE PROCEDURE funcname ( arguments )

DESCRIPTION

       CREATE  CONSTRAINT TRIGGER creates a constraint trigger. This is the same as a regular trigger except that the timing of the trigger firing
       can be adjusted using SET CONSTRAINTS [set_constraints(7)].  Constraint triggers must be AFTER ROW triggers. They can be  fired	either	at
       the  end of the statement causing the triggering event, or at the end of the containing transaction; in the latter case they are said to be
       deferred. A pending deferred-trigger firing can also be forced to happen immediately by using SET CONSTRAINTS.

PARAMETERS

       name   The name of the constraint trigger. This is also the name to use when modifying the trigger's behavior using SET	CONSTRAINTS.   The
	      name cannot be schema-qualified -- the trigger inherits the schema of its table.

       event  One of INSERT, UPDATE, or DELETE; this specifies the event that will fire the trigger. Multiple events can be specified using OR.

       table_name
	      The (possibly schema-qualified) name of the table in which the triggering events occur.

       referenced_table_name
	      The  (possibly schema-qualified) name of another table referenced by the constraint. This option is used for foreign-key constraints
	      and is not recommended for general use.

       DEFERRABLE

       NOT DEFERRABLE

       INITIALLY IMMEDIATE

       INITIALLY DEFERRED
	      The default timing of the trigger.  See the CREATE TABLE [create_table(7)] documentation for details of these constraint options.

       funcname
	      The function to call when the trigger is fired. See CREATE TRIGGER [create_trigger(7)] for details.

       arguments
	      Optional argument strings to pass to the trigger function. See CREATE TRIGGER [create_trigger(7)] for details.

COMPATIBILITY

       CREATE CONSTRAINT TRIGGER is a PostgreSQL extension of the SQL standard.

SEE ALSO

       CREATE TRIGGER [create_trigger(7)], DROP TRIGGER [drop_trigger(7)], SET CONSTRAINTS [set_constraints(7)]

SQL - Language Statements					    2010-05-14					      CREATE CONSTRAINT TRIGGER(7)