pg_cursors

The pg_cursors view lists the currently available cursors. Cursors can be defined in one of the following ways:

• via the DECLARE SQL statement

• via the Bind message in the frontend/backend protocol

• via the Server Programming Interface (SPI)

  Note that Apache Cloudberry does not support the definition, or access of, parallel retrieve cursors via SPI.

Cursors exist only for the duration of the transaction that defines them, unless they have been declared WITH HOLD. Non-holdable cursors are only present in the view until the end of their creating transaction.

info

Apache Cloudberry does not support holdable parallel retrieve cursors.

name	type	references	description
name	text		The name of the cursor.
statement	text		The verbatim query string submitted to declare this cursor.
is_holdable	boolean		true if the cursor is holdable (that is, it can be accessed after the transaction that declared the cursor has committed); false otherwise. > Note Apache Cloudberry does not support holdable parallel retrieve cursors, this value is always false for such cursors.
is_binary	boolean		true if the cursor was declared BINARY; false otherwise.
is_scrollable	boolean		true if the cursor is scrollable (that is, it allows rows to be retrieved in a nonsequential manner); false otherwise. > Note Apache Cloudberry does not support scrollable cursors, this value is always false.
creation_time	timestamptz		The time at which the cursor was declared.
is_parallel	boolean		true if the cursor was declared PARALLEL RETRIEVE; false otherwise.