MySql】查询数据库中所有表及列的信息

SELECT table_name ,table_rows FROM information_schema.tables  WHERE table_schema='数据库名称' ORDER BY table_rows DESC;    ---------------------------------------------------- SELECT    TABLE_NAME,          -- 表名   COLUMN_NAME,         -- 字段名   DATA_TYPE,           -- 字段类型   COLUMN_COMMENT        -- 字段注释 FROM  informatION_SCHEMA.COLUMNS  WHERE TABLE_SCHEMA = '数据库名称'  

use information_schema;

select table_name,table_rows from tables 
where TABLE_SCHEMA = 'testdb' 
order by table_rows desc;