SPI_is_cursor_plan(3) PostgreSQL 9.4.15 Documentation SPI_is_cursor_plan(3)
NAME
SPI_is_cursor_plan - return true if a statement prepared by SPI_prepare
can be used with SPI_cursor_open
SYNOPSIS
bool SPI_is_cursor_plan(SPIPlanPtr plan)
DESCRIPTION
SPI_is_cursor_plan returns true if a statement 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.
ARGUMENTS
SPIPlanPtr plan
prepared statement (returned by SPI_prepare)
RETURN VALUE
true or false to indicate if the plan can produce a cursor or not, with
SPI_result set to zero. If it is not possible to determine the answer
(for example, if the plan is NULL or invalid, or if called when not
connected to SPI), then SPI_result is set to a suitable error code and
false is returned.
PostgreSQL 9.4.15 2017 SPI_is_cursor_plan(3)
PostgreSQL 9.4.15 - Generated Tue Nov 28 19:20:44 CST 2017