ORACLE和SQL查询库数据量

ORACLE根据账号查询每张表数据量：

select t.table_name,t.num_rows from user_tables t ORDER BY NUM_ROWS DESC;

SQL SERVER查询总数据量：

SELECT   SUM(记录条数) AS 总记录数
FROM      (SELECT   TOP (10000) a.name AS 表名, MAX(b.rows) AS 记录条数
                 FROM      sys.sysobjects AS a INNER JOIN
                                 sys.sysindexes AS b ON a.id = b.id
                 WHERE   (a.xtype = 'u')
                 GROUP BY a.name
                 ORDER BY 记录条数 DESC) AS t1;

SQL SERVER分表查询数据量：

SELECT   a.name AS 表名, MAX(b.rows) AS 记录条数
FROM      sys.sysobjects AS a INNER JOIN
                sys.sysindexes AS b ON a.id = b.id
WHERE   (a.xtype = 'u')
GROUP BY a.name
ORDER BY 记录条数 DESC

MYSQL查询语句：

use information_schema;
select table_name,table_rows from tables where TABLE_SCHEMA = 'test' order by table_rows desc;