一.创建临时表1、临时表概述 临时表创建后,其结构将一直存在,但其数据只在当前事务或当前会话中有效。事务级临时表(ON COMMIT DELETE ROWS)在事务提交时系统自动删除表中的所有记录。会话级临时表(ON COMMIT PRESERVE ROWS 在会话终止时系统自动删除表中的所有记录。2、语法格式 CREATE GLOBAL TEMPORARY TABLE ...
1.建立分区表create table单分区表:其中分区字段是partdate,注意分区字段不能和表字段一样,否则会报重复的错create table test_t2(words string,frequency string) partitioned by (partdate string) row format delimited fields terminated by '\1';多分区 ...
Create a new label g create a new empty GPT partition table G create a new empty SGI (IRIX) partition table o create a new empty DOS partition table s create a new empty Sun partition table 如何使用 fdisk 列出分区类型? 在fdisk中敲击l,它便会列出所有可用分区的类型: $ sudo fdisk /dev/s...
s create anewemptySun disklabel t change a partition's system id u change display/entry units v verify the partition table w write table to disk and exit x extrafunctionality(experts only)# 根据提示输入n add anewpartition命令(输入 m 获取帮助):n Partition type:pprimary(0primary,0extended,4f...
m print this menu //查看操作指令的帮助信息 n add a new partition //新建分区 o create a new empty DOS partition table p print the partition table //列表查看分区信息 q quit without saving changes //放弃分区设置并退出 s create a new empty Sun disklabel t change a partition'...
(scsi) Disk /dev/sdb:21.5GB Sectorsize(logical/physical):512B/512BPartitionTable: gpt Disk Flags:NumberStartEndSizeFilesystemNameFlags11049kB1001MB1000MB primary [root@centos8 ~]#parted /dev/sdb mklabel msdosWarning: The existing disk labelon/dev/sdb will be destroyedandalldataonthis disk ...
G create a new empty SGI (IRIX) partition table o create a new empty DOS partition table s create a new empty Sun partition table 如何使用 fdisk 列出分区类型? 在fdisk 中敲击 l,它便会列出所有可用分区的类型: $ sudo fdisk /dev/sdc ...
Device does not contain a recognized partition table 使用磁盘标识符 0xa7a34d5d 创建新的 DOS 磁盘标签。 命令(输入 m 获取帮助):m 命令操作 a toggle a bootable flag b edit bsd disklabel c toggle the dos compatibility flag d delete a partition g create a new empty GPT partition table G ...
mklabel,mktable LABEL-TYPE create a new disklabel (partition table) mkpart PART-TYPE [FS-TYPE] START END make a partition name NUMBER NAME name partition NUMBER as NAME print [devices|free|list,all|NUMBER] display the partition table, ...
d delete a partition # 删除一个分区 g create a new empty GPT partition table G create an IRIX (SGI) partition table l list known partition types # 列出已知分区类型 m print this menu # 列出帮助菜单 n add a new partition # 添加一个新分区 ...