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 and false if that is not the case. The criteria are that the plan represents one single command and that this command is a SELECT without an INTO clause.
void * plan execution plan (returned by SPI_prepare)
true or false to indicate if the plan can produce a cursor or not, or SPI_ERROR_ARGUMENT if the plan is NULL