CLOSE — close a cursor
CLOSE { name
| ALL }
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.
Every non-holdable open cursor is implicitly closed when a
transaction is terminated by COMMIT
or
ROLLBACK
. A holdable cursor is implicitly
closed if the transaction that created it aborts via
ROLLBACK
. If the creating transaction
successfully commits, the holdable cursor remains open until an
explicit CLOSE
is executed, or the client
disconnects.
name
The name of an open cursor to close.
ALL
Close all open cursors.
LightDB 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.
You can see all available cursors by querying the pg_cursors
system view.
If a cursor is closed after a savepoint which is later rolled back,
the CLOSE
is not rolled back; that is, the cursor
remains closed.
Close the cursor liahona
:
CLOSE liahona;
CLOSE
is fully conforming with the SQL
standard. CLOSE ALL
is a LightDB
extension.