最新数据库空间有感觉捉急了,上次,删了些数据空了800+G,撑了一个多月,现在还有400+G,每天10G的增量,多少空间也感觉不够用啊. 不能加硬盘,就只有删数据了.. 删数据,人懒,直接找表行最多,占空间最大的表删 于是就有了下面一段SQL: ||'M' bytes from user_segments group by segment_name) us where ut.TABLE_NAME = us.segment_name order by num_rows desc nulls las
https://unix.stackexchange.com/questions/288521/with-the-linux-cat-command-how-do-i-show-only-certain-lines-by-number To print one line (5) $ sed -n 5p file Line 5 To print multiple lines (5 & 8) $ sed -n -e 5p -e 8p file Line 5 Line 8 To print speci
一.查看表名和对应的数据行数select a.name as '表名',b.rows as '表数据行数'from sysobjects a inner join sysindexes bon a.id = b.idwhere a.type = 'u'and b.indid in (0,1)--and a.name not like 't%'order by b.rows desc 二.查看表名和表占用空间信息--判断临时表是否存在,存在则删除重建if exists(select 1 fr
快速统计文本文件中的行数( StreamReader.ReadLine() ): 测试代码如下: //读取txt文件中总行数的方法 public static int requestMethod(String _fileName) { Stopwatch sw = new Stopwatch(); var path = _fileName; ; //按行读取 sw.Restart(); using (var sr = new StreamReader(path)) { var ls = "&qu
SqlAzure中的方式: select t.name ,s.row_count from sys.tables t join sys.dm_db_partition_stats s ON t.object_id = s.object_id and t.type_desc = 'USER_TABLE' and t.name not like '%dss%' order by row_count desc SQLServer的方式: select a.name as '表名',b.rows as
select t.table_name,t.num_rows from user_tables t ORDER BY NUM_ROWS DESC;//实际行数 analyze table emp compute statistics; select num_rows * avg_row_len from user_tables where table_name = 'TB_SYS_LOG';//某一个表占用的空间 analyze table emp compute statistics; sel
