Function PQsendQueryParams

src/interfaces/libpq/fe-exec.c:1471–1508

* PQsendQueryParams * Like PQsendQuery, but use extended query protocol so we can pass parameters */

 *		Like PQsendQuery, but use extended query protocol so we can pass parameters
 */
int
PQsendQueryParams(PGconn *conn,
				  const char *command,
				  int nParams,
				  const Oid *paramTypes,
				  const char *const *paramValues,
				  const int *paramLengths,
				  const int *paramFormats,
				  int resultFormat)
{
	if (!PQsendQueryStart(conn, true))
		return 0;

	/* check the arguments */
	if (!command)
	{
		appendPQExpBufferStr(&conn->errorMessage,
							 libpq_gettext("command string is a null pointer\n"));
		return 0;
	}
	if (nParams < 0 || nParams > PQ_QUERY_PARAM_MAX_LIMIT)
	{
		appendPQExpBuffer(&conn->errorMessage,
						  libpq_gettext("number of parameters must be between 0 and %d\n"),
						  PQ_QUERY_PARAM_MAX_LIMIT);
		return 0;
	}

	return PQsendQueryGuts(conn,
						   command,
						   "",	/* use unnamed statement */
						   nParams,
						   paramTypes,
						   paramValues,
						   paramLengths,
						   paramFormats,
						   resultFormat);
}

/*
 * PQsendPrepare