Practical PostgreSQL
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CLOSE

Name

CLOSE -- Closes a previously defined cursor object.

Synopsis

CLOSE cursor

Parameters

cursor: The name of a currently open cursor that you wish to close.

Results

CLOSE: The message returned when the cursor is successfully closed.
NOTICE: PerformPortalClose: portal "cursor" not found: The notice returned if the specified cursor is either not declared, or not open.

Description

The CLOSE command closes an open cursor and frees the resources it was using. Cursors should always be closed after they are no longer needed. Once a cursor is closed, further operations are not allowed on it.

Note: Executing a COMMIT or ROLLBACK terminates the current transaction, closing all open cursors.

Examples

The following example opens a transaction, declares the cur_publishers cursor, and closes it:

booktown=# BEGIN;
BEGIN
booktown=# DECLARE cur_publishers CURSOR FOR SELECT * FROM publishers;
SELECT
booktown=# CLOSE cur_publishers;
CLOSE

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