Description
CLOSE frees the resources associated with an open cursor.
After the cursor is closed, no subsequent operations
are allowed on it. A cursor should be closed when it is
no longer needed.
An implicit close is executed for every open cursor when a
transaction is terminated by COMMIT
or ROLLBACK.
Notes
PostgreSQL does not have
an explicit OPEN cursor statement;
a cursor is considered open when it is declared.
Use the DECLARE statement to declare a cursor.