SPI_execute_extended — execute a command with out-of-line parameters
int SPI_execute_extended(const char *command, const SPIExecuteOptions *options)
   SPI_execute_extended executes a command that might
   include references to externally supplied parameters.  The command text
   refers to a parameter as $,
   and the noptions->params object (if supplied)
   provides values and type information for each such symbol.
   Various execution options can be specified
   in the options struct, too.
  
   The options->params object should normally
   mark each parameter with the PARAM_FLAG_CONST flag,
   since a one-shot plan is always used for the query.
  
   If options->dest is not NULL, then result
   tuples are passed to that object as they are generated by the executor,
   instead of being accumulated in SPI_tuptable.  Using
   a caller-supplied DestReceiver object is particularly
   helpful for queries that might generate many tuples, since the data can
   be processed on-the-fly instead of being accumulated in memory.
  
const char * commandcommand string
const SPIExecuteOptions * optionsstruct containing optional arguments
   Callers should always zero out the entire options
   struct, then fill whichever fields they want to set.  This ensures forward
   compatibility of code, since any fields that are added to the struct in
   future will be defined to behave backwards-compatibly if they are zero.
   The currently available options fields are:
  
ParamListInfo paramsdata structure containing query parameter types and values; NULL if none
bool read_onlytrue for read-only execution
bool allow_nonatomic
      true allows non-atomic execution of CALL and DO
      statements (but this field is ignored unless
      the SPI_OPT_NONATOMIC flag was passed
      to SPI_connect_ext)
     
bool must_return_tuples
      if true, raise error if the query is not of a kind
      that returns tuples (this does not forbid the case where it happens to
      return zero tuples)
     
uint64 tcount
      maximum number of rows to return,
      or 0 for no limit
     
DestReceiver * dest
      DestReceiver object that will receive any tuples
      emitted by the query; if NULL, result tuples are accumulated into
      a SPI_tuptable structure, as
      in SPI_execute
     
ResourceOwner owner
      This field is present for consistency
      with SPI_execute_plan_extended, but it is
      ignored, since the plan used
      by SPI_execute_extended is never saved.
     
   The return value is the same as for SPI_execute.
  
   When options->dest is NULL,
   SPI_processed and
   SPI_tuptable are set as in
   SPI_execute.
   When options->dest is not NULL,
   SPI_processed is set to zero and
   SPI_tuptable is set to NULL.  If a tuple count
   is required, the caller's DestReceiver object must
   calculate it.