SPI_freeplan
Name
SPI_freeplan -- free a previously saved prepared statement
Synopsis
int SPI_freeplan(SPIPlanPtr plan)
描述
   SPI_freeplan releases a prepared statement
   previously returned by SPI_prepare or saved by
   SPI_keepplan or SPI_saveplan.
  
参数
- SPIPlanPtr plan
-       pointer to statement to free
      
返回值
   0 on success;
   SPI_ERROR_ARGUMENT if plan
   is NULL or invalid