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DBLINK_BUILD_SQL_DELETE(3)	  PostgreSQL 9.2.7 Documentation       DBLINK_BUILD_SQL_DELETE(3)

       dblink_build_sql_delete - builds a DELETE statement using supplied values for primary key
       field values

       dblink_build_sql_delete(text relname,
			       int2vector primary_key_attnums,
			       integer num_primary_key_atts,
			       text[] tgt_pk_att_vals_array) returns text

       dblink_build_sql_delete can be useful in doing selective replication of a local table to a
       remote database. It builds a SQL DELETE command that will delete the row with the given
       primary key values.

	   Name of a local relation, for example foo or myschema.mytab. Include double quotes if
	   the name is mixed-case or contains special characters, for example "FooBar"; without
	   quotes, the string will be folded to lower case.

	   Attribute numbers (1-based) of the primary key fields, for example 1 2.

	   The number of primary key fields.

	   Values of the primary key fields to be used in the resulting DELETE command. Each
	   field is represented in text form.

       Returns the requested SQL statement as text.

       As of PostgreSQL 9.0, the attribute numbers in primary_key_attnums are interpreted as
       logical column numbers, corresponding to the column's position in SELECT * FROM relname.
       Previous versions interpreted the numbers as physical column positions. There is a
       difference if any column(s) to the left of the indicated column have been dropped during
       the lifetime of the table.

	   SELECT dblink_build_sql_delete('"MyFoo"', '1 2', 2, '{"1", "b"}');
	    DELETE FROM "MyFoo" WHERE f1='1' AND f2='b'
	   (1 row)

PostgreSQL 9.2.7			    2014-02-17		       DBLINK_BUILD_SQL_DELETE(3)
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