func (self *Connection) ExecuteFetch(query []byte, maxrows int) (qr *QueryResult, err error) { defer handleError(&err) self.validate() if C.mysql_real_query(self.handle, (*C.char)(unsafe.Pointer(&query[0])), C.ulong(len(query))) != 0 { return nil, self.lastError(query) } result := C.mysql_store_result(self.handle) if result == nil { if int(C.mysql_field_count(self.handle)) != 0 { // Query was supposed to return data, but it didn't return nil, self.lastError(query) } qr = &QueryResult{} qr.RowsAffected = uint64(C.mysql_affected_rows(self.handle)) qr.InsertId = uint64(C.mysql_insert_id(self.handle)) return qr, nil } defer C.mysql_free_result(result) qr = &QueryResult{} qr.RowsAffected = uint64(C.mysql_affected_rows(self.handle)) if qr.RowsAffected > uint64(maxrows) { return nil, &SqlError{0, fmt.Sprintf("Row count exceeded %d", maxrows), string(query)} } qr.Fields = self.buildFields(result) qr.Rows = self.fetchAll(result) return qr, nil }
//获取影响的行数(插入的行数、更新的数行、删除的行数、查询的行数等), //成功返回0, 否则返回errnum func (mysql *MySQL) AffectedRows() (rownum uint64) { rownum = uint64(C.mysql_affected_rows(mysql.my)) return }