I can not believe that I had done this about two years Now we know there is totally different between oracle parttion table and sqlserver partition table. Here we go to show them , it used for range right, by the way, /****** Object: View [dbo].[part…

Yes . In the previous. chapter , we see how to generate "partition function" "parttiton schema" and "parttiton table" what can we do if we need to add or drop an table partition ? Here is exist status: /* add partition (oracl…

使用Navicat连接Mycat 8066 成功插入了分库表和全局表 1.全局表 sql如下: '); '); '); 插入成功! 2.分库表 sql如下: ', null, null, null, null); ', null, null, null, null); ', null, null, null, null); 本想这些sql是从mysql导出的,应该不会出错,但是执行的时候报错 [Err] 1064 - partition table, insert must provide Co…

数据库结构和索引的是否合理在很大程度上影响了数据库的性能,但是随着数据库信息负载的增大,对数据库的性能也发生了很大的影响.可能我们的数据库在一开始有着很高的性能,但是随着数据存储量的急速增长—例如订单数据—数据的性能也受到了极大的影响,一个很明显的结果就是查询的反应会非常慢.在这个时候,除了你可以优化索引及查询外,你还可以做什么?建立分区表(Table Partition)可以在某些场合下提高数据库的性能,在SQL Server 2005中也可以通过SQL语句来创建表分区,但在SQL Serve…

2014-06-20 Created By BaoXinjian…

2014-08-22 Created By BaoXinjian…

Alter Table/Partition/Column Alter Table Rename Table Alter Table Properties Alter Table Comment Add SerDe Properties Alter Table Storage Properties Additional Alter Table Statements Alter Partition Add Partitions Dynamic Partitions Rename Partition…

转载内容 摘录部分我的笔记的中doc,和大家一起感受Oracle 11g在分区方面的增强--System Partitioning 系统分区的特点 ●系统分区与其他分区相比,一个最根本的区别就是不需要指定分区KEY值 ●数据会进入哪个分区由应用程序决定,实际上也就是由SQL来决定,在Insert语句中可以指定插入哪个分区 ●因为System Partitioning分区表没有分区字段,所以一般分区表的performance benefits对System Partitioning分区表不再适用(…

三.删除分区 You can drop partitions from range, list, or composite range-list partitioned tables. ALTER TABLE ... DROP PARTITION part_name; For hash-partitioned tables, or hash subpartitions of range-hash partitioned tables, you must perform. a coalesce o…

在 mkfs.ext4 /dev/sda2 格式化硬盘空间时,可能出现这种错误. had this situation at office where I was told to re-partition an already existing partition. The situation was to get the below schema /dev/sdb1 1 3040 24418768+ 83 Linux /dev/sdb2 3041 6080 24418800 83 Linux…