SPI_is_cursor_plan — return true
if a plan
prepared by SPI_prepare
can be used with
SPI_cursor_open
bool SPI_is_cursor_plan(void * plan
)
SPI_is_cursor_plan
returns true
if a plan prepared by SPI_prepare
can be passed
as an argument to SPI_cursor_open
, or
false
if that is not the case. The criteria are that the
plan
represents one single command and that this
command returns tuples to the caller; for example, SELECT
is allowed unless it contains an INTO
clause, and
UPDATE
is allowed only if it contains a RETURNING
clause.