Description:from the doumentation athttp://dev.mysql.com/doc/mysql/en/SHOW_TABLE_STATUS.htmlMax_data_length The maximum length of the data file. For fixed-row formats, this is the maximum number of rows in the table. For dynamic-row formats, this is the total number of data bytes that...
The following are two create table statements. The first table returns max data length as 4TB but the second one returns 1TB. Could someone explain to me why the max_data_length are different? Can I have 4TB max data length in the second create table statement using dynamic row_format?
The following are two create table statements. The first table returns max data length as 4TB but the second one returns 1TB. Could someone explain to me why the max_data_length are different? Can I have 4TB max data length in the second create table statement using dynamic row_format?
2 Avg_row_length: 16 Data_length: 126984 Max_data_length: 0 <--- Index_length: 0 Data_free: 0 Auto_increment: NULL Create_time: 2014-02-02 14:26:09 Update_time: NULL Check_time: NULL Collation: latin1_swedish_ci Checksum: NULL Create_options: Comment: 1 row in set (0.00 sec...
1.MySQL Cluster的技术复杂度太高，毕竟是Share-Nothing的分布式数据库产品，支持分布式事务，以及完全透明等； 2.MySQL Cluster的索引数据必须基于内存，元数据也是7.2版本才推出基于列的模式允许存储在磁盘上，这个功能其实没啥意义，要是能做
#define BLE_NUS_MAX_DATA_LEN (GATT_MTU_SIZE_DEFAULT - 3) /**< 最大20字节Maximum length of data (inbytes) that can be transmitted by the Nordic UART service module to the peer. */ 相关知识点: 试题来源: 解析 uint32_t ble_nus_c_init(ble_nus_c_t * p_ble_nus_c, ble_nus...
百度试题 结果1 题目#define BLE_NUS_MAX_RX_CHAR_LEN BLE_NUS_MAX_DATA_LEN /**< 等价于接收长度Maximum length of the RX Characteristic (in bytes). */ 相关知识点: 试题来源: 解析 uint32_t err_code; 反馈 收藏
#define BLE_NUS_MAX_TX_CHAR_LEN BLE_NUS_MAX_DATA_LEN /**< Maximum length of the TX Characteristic (inbytes). */ 蓝牙ble是基于属性协议的 属性协议:客户端通过它可以发现并获取属**器上的属性:6种基本操作 1、请求:客户端发给请求给服务器,需要服务器回复一个响应 2、响应: 3、命令:客户端发...
查看max_length_for_sort_data影响的排序行为 要更好的理解max_length_for_sort_data的作用,我们可以对一个表进行排序操作,并观察性能上的变化。 首先,创建一个测试表: CREATETABLEtest_sort(idINTAUTO_INCREMENTPRIMARYKEY,nameVARCHAR(255)); 1. 2. ...
在MySQL中,可以通过修改my.cnf配置文件来设置max_length_for_sort_data参数。下面是my.cnf配置文件中的一个示例: [mysqld] max_length_for_sort_data = 1024M 1. 2. 上述示例将max_length_for_sort_data参数设置为1024M,表示临时文件的最大长度为1024MB。