Partition resizing is a method to increase extra space for a partition when the space of the partition cannot meet the usage requirements. Many friends usually use partitionmagic to do this. But in fact, users using Windows XP/Server 2003 can use
() AND TABLE_NAME='tb_sub';
2. Define each sub-partition
Define a subpartition. You can define the specific partition name and path for each subpartition.
CREATE TABLE tb_sub_ev (id INT, purchased DATE) PARTITION BY RANGE( YEAR(purchased) ) SUBPARTITION BY HASH( TO_DAYS(purchased) ) ( PARTITION p0 VALUES LESS THAN (1990) ( SUBPARTITION s0, SUBPARTITION s1 ), PARTITION p1 VALUES LESS THAN (2000) ( SUBPARTITION s2, SUBPARTITIO
16. Simple SQL Optimization for mysql partitions 2. SQL Optimization for mysql partitions
1. index classification B-Tree supports HASH. Only memory supports R-Tree myisam and supports Full-text myisam (Full-text index. only the "=" condition in the Memory engine uses the index ======================== === Data Import Optimization =========================== 3. how to Improve myisam import efficiency alter t
was later realized that the pit was caused by a GPT partition on the hard drive. So why did I let Ubuntu automatically partition it into a GPT partition? It also blames this HP's working machine is very exotic, it supports the legacy BIOS, also supports EFI, when the original WinXP exists, it uses of course the MBR partition (MSDOS partition), So the installation of Ubuntu is the use of the MBR partition, and then to the Ubuntu automatic partition, it saw the motherboard support EFI, the hard d
Two-way merge Insert merge in-situ merge, two-way merge sort
Insert and merge
The time complexity of Merge Sorting is O (nlgn), and the space complexity is O (n );
However, sorting based on a single record that is merged by two
LIST partitions of mysql partitions
LIST partitions in MySQL are similar to RANGE partitions in many aspects. Like partitioning by RANGE, each partition must be clearly defined. The main difference between them is that the definition and selection of each partition in LIST partitio
Mysql table partitions are partitioned by day, and mysql partitions by day MySQL table partitioning refers to splitting a table into several small tables according to the set conditions. MySQL 5.1 and later versions support table partitioning, after using the table partition, the performance of large tables in MySQL is improved during statistics query. Using MySQL table
Use fdisk to add hard disk partitions and fdisk to add Hard Disk Partitions
1. use fdisk to create 6 partitions [1 P + 1E (5L)] // dev/sdb1/dev/sdb5/dev/sdb6/dev/sdb7/dev/sdb8/deb/sdb9
1 [root@server ~]# fdisk -l 2 3 Disk /dev/sda: 8589 MB, 8589934592 bytes 4 255 heads, 63 sectors/track, 1044 cylinders 5 Units = cylinders of 16065 * 512 = 8225280 bytes 6 Sector
A
Edit the Mount script Autowinfs by executing the following command.
sudo gedit/usr/sbin/autowinfs
Copy and paste the following referenced content,Save the file and exit.
#!/bin/sh##autowinfs Auto Mount Windows disks## Copyright (c) Jiahua Huang #License: GPLv2##/usr/bin/sutowinfs# used to automatically mount Windows partitions on the machine and write to/etc/fstab# 52 months 14:06:12 CST 2005Mkdir-p/windows/rmdir/windows/* 1>/dev/nullGrep-v '/windo
started:This installation method can only be used for adjustment of non-system partitions and unmounted partitions. Therefore, when you select a Ubuntu installation partition/dev/sda3, click the "partition" menu, the menu items related to partition adjustment are disabled, and a "locked" icon is displayed after the partition name, indicating that the partition cannot be adjusted. It is recommended to downl
1. Virtual memory technology, Windows through the exchange of files to achieve, Linux through the swap partition to achieve. So Windows has only one partition, and installs Linux at least two partitions, one of which is swap partition, virtual memory to some extent can solve the problem of insufficient memory.
2. Hard disk must be partitioned before use, hard disk partition has primary partition, extended partition and logical partition, a hard disk
(18) partitions in mysql (after development), 18 mysql Overview
Before getting started, I saw the partition, And I squeezed it. Yesterday, I finally learned what partitioning is, but that is also the case. Today, we can sum up that good memory is not as good as bad writing.Zookeeper MySQL supports the Partition Function from 5.1. One sentence for partitioning is:Divides a table into multiple areas (pages/Files) according to certain rules (such as rang
Today, a co-worker has a problem with three 1T disks (SDB, SDC, SDD) added to several of the hosts he owns, but the new three partitions are added directly to a section using GPT partitioning. Because the previous MBR boot was used, and the LVM partition was mounted separately on several mount points. Colleagues now want to convert the new three partitions to MBR, to the PV volume, to the original LVM parti
Tags: secure span transfer blog normal col ice tle imgIn the installation of new systems, sometimes can not estimate or wrong partition size, often lead to the operation behind us is greatly inconvenient, such as a partition is too small, resulting in software installation will be reported when the installation space is not enough, which is very troublesome. Here, I'll record the whole process of resizing the home and root partitions after the error p
In the project database design process, because the data volume of a single table is very large, you need to partition the table. Because the data in the table is a historical transaction, it is partitioned by month to improve query and management.
Since we didn't know much about table partitions before, we checked a lot of information to implement the above functions. At the beginning, we used Crontab to call Shell scripts to automatically create
Etc/fstab description:/dev/hdbx is the partition in windows to be mounted. Note that my partition is hdb, you may also be using hda, where/mnt/winx is the directory to be mounted. here I will use it to Mount CDE disks for windows respectively. Vfat indicates the fat32 file format. ntfs indicates utf8 after ntfs format. umask indicates the permission of the file directory. In short
Etc/fstab
Note:/dev/hdbx is the partition under windows to be mounted. Note that I am using hdb, you may also be us
How to completely back up the system partitions and data partitions on the android system, androiddata
Android system backup may be used in many cases, the following python script, can be used to back up the entire data Partition: All the datapartition files and directories into data.zip, and generate a recovery edify script to update-script.sh. Of course, you can simply modify the backup path of the script
ORA-14300: partition keywords map to partitions that exceed the maximum number of partitions allowed
ORA-14300: partition keywords map to partitions that exceed the maximum number of partitions allowed
ORA-14300: partition keywords map to partitions that exceed the ma
Relationship between primary partitions and logical partitions in linuxThe difference between a primary partition and an extended partition is that the primary partition is located at the beginning of the hard disk, where the MBR sector is located. The data at this position is automatically read and executed by the BIOS when the computer is started, that is to say, the partition table at this location will
Allocate swap partitions and swap partitions
1. The free command is used to view the usage of swap partitions.[Root @ localhost ~] # Free# View memory and swap partition usage◆ Cached: stores the read data in the memory.Read data directly from the memory without reading the hard disk, accelerating data reading.Cheng◆ Buffer: Refers to storing distributed write o
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