SPI_freeplan
SPI_freeplan — free a previously saved prepared statement
Synopsis
int SPI_freeplan(SPIPlanPtr plan)
Description
SPI_freeplan releases a prepared statement previously returned by SPI_prepare or saved by SPI_keepplan or SPI_saveplan. 
Arguments
- SPIPlanPtr- plan
- pointer to statement to free 
Return Value
 0 on success; SPI_ERROR_ARGUMENT if plan is NULL or invalid