SQL Functions Returning Sets : Code Block « Postgre SQL « PostgreSQL






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SQL Functions Returning Sets

postgres=#
postgres=# CREATE TABLE myTable (id   int,
postgres(#                       sid  int,
postgres(#                       name text);
CREATE TABLE
postgres=#
postgres=# INSERT INTO myTable VALUES (1, 1, 'Joe');
INSERT 0 1
postgres=# INSERT INTO myTable VALUES (1, 2, 'Ed');
INSERT 0 1
postgres=# INSERT INTO myTable VALUES (2, 1, 'Mary');
INSERT 0 1
postgres=#
postgres=# -- SQL Functions Returning Sets
postgres=#
postgres=# CREATE FUNCTION getData(int) RETURNS SETOF myTable AS $$
postgres$#    SELECT * FROM myTable WHERE id = $1;
postgres$# $$ LANGUAGE SQL;
CREATE FUNCTION
postgres=#
postgres=# SELECT * FROM getData(1) AS t1;
      REATE
 id | sid | name
----+-----+------
  1 |   1 | Joe
  1 |   2 | Ed
(2 rows)

postgres=#
postgres=# drop function getData(int);
DROP FUNCTION
postgres=# drop table myTable;
DROP TABLE
postgres=#
postgres=#








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1.Two 'anyelement' parameters
2.Create a subblock