SPI_saveplan — save a plan
void * SPI_saveplan(void * plan
)
SPI_saveplan
saves a passed plan (prepared by
SPI_prepare
) in memory protected from freeing
by SPI_finish
and by the transaction manager
and returns a pointer to the saved plan. This gives you the
ability to reuse prepared plans in the subsequent invocations of
your procedure in the current session. You may save the pointer
returned in a local variable. Always check if this pointer is
NULL
or not either when preparing a plan or using
an already prepared plan in SPI_execute_plan
.