点击(此处)折叠或打开CREATE TEMPORARY TABLE view_table1 SELECT yh_id,SUM(jine) AS jine FROM liushuizhang WHERE lb IN(3,4) GROUP BY yh_id;CREATE TEMPORARY TABLE view_table2 SELECT yh_id,SUM(jine) AS jine FROM liushuizhang WHERE lb IN(1,2) GROUP BY yh_id;...【阅读全文】
在mysql中如何查询所有数据库占用磁盘空间大小的SQL语句.查询所有数据库占用磁盘空间大小的SQL语句:select TABLE_SCHEMA, concat(truncate(sum(data_length)/1024/1024,2),' MB') as data_size,concat(truncate(sum(index_length)/1024/1024,2),'MB') as index_sizefrom information_sc...【阅读全文】