mysql show table status 的替代方案：获得更多更具体的表信息

mysql提供的show table status like ‘%xxx’可以方便的查看某些表的信息，但是使用这个语句没法对结果集进行排序，不如我想看数据库中那个表中的数据量最大就办不到了？

其实可以通过访问information_schema数据库获得show table status的相关信息

比如:

SELECT * FROM information_schema.tables WHERE table_schema = DATABASE();

获得按数据量排序的信息：

SELECT table_name,ENGINE,VERSION,ROW_FORMAT,table_rows,AVG_ROW_LENGTH,
Data_length,Max_data_length,Index_length,Data_free,AUTO_INCREMENT,
Create_time,Update_time,Check_time,table_collation,CHECKSUM,
Create_options,table_comment FROM information_schema.TABLES
WHERE table_schema = DATABASE()
ORDER BY table_rows DESC

也可以指定数据库：

SELECT table_name,Engine,Version,Row_format,table_rows,Avg_row_length,
Data_length,Max_data_length,Index_length,Data_free,Auto_increment,
Create_time,Update_time,Check_time,table_collation,Checksum,
Create_options,table_comment FROM information_schema.tables
WHERE table_schema = 'yourdb';

还可以方便的查询到那些表的引擎不是InnoDB，如下sql语句：

SELECT table_name,Engine,Version,Row_format,table_rows,Avg_row_length,
Data_length,Max_data_length,Index_length,Data_free,Auto_increment,
Create_time,Update_time,Check_time,table_collation,Checksum,
Create_options,table_comment FROM information_schema.tables
WHERE table_schema = 'yourdb' and Engine != 'InnoDB'

原文地址：http://outofmemory.cn/code-snippet/2411/mysql-show-table-status-tidai-scheme-get-gengduo-geng-juti-table-information