mysql中showtablestatus获取表信息的方法介绍(图)
mysql>show table status; mysql>show table status like 'esf_seller_history'\G; mysql>show table status like 'esf_%'\G;
样例:
mysql>show table status like 'esf_seller_history'\G;
Name
表名称
2.Engine:
表的存储引擎
3.Version:
版本
4.Row_format
行格式。对于MyISAM引擎,这可能是Dynamic,Fixed或Compressed。动态行的行长度可变,例如Varchar或Blob类型字段。固定行是指行长度不变,例如Char和Integer类型字段。
5. Rows
表中的行数。对于非事务性表,这个值是精确的,对于事务性引擎,这个值通常是估算的。
6.Avg_row_length
平均每行包括的字节数
7.Data_length
整个表的数据量(单位:字节)
8.Max_data_length
表可以容纳的最大数据量
9.Index_length
索引占用磁盘的空间大小
10.Data_free
对于MyISAM引擎,标识已分配,但现在未使用的空间,并且包含了已被删除行的空间。
11.Auto_increment
下一个Auto_increment的值
12.Create_time
表的创建时间
13.Update_time
表的最近更新时间
14.Check_time
使用 check table 或myisamchk工具检查表的最近时间
15.Collation
表的默认字符集和字符排序规则
16.Checksum
如果启用,则对整个表的内容计算时的校验和
17.Create_options
指表创建时的其他所有选项
18.Comment
包含了其他额外信息,对于MyISAM引擎,包含了注释徐标新,如果表使用的是innodb引擎 ,将现实表的剩余空间。如果是一个视图,注释里面包含了VIEW字样。
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