) from table name
To re-query:
Copy Code code as follows:
SELECT DISTINCT num from class
Select DISTINCT key name from table name
Three, the simple use method of Mesasqlite
Mesasqlite is a visual SQLite database editing software, very convenient to use. The following address is the download link: http://www.jb51.net/softs/419734.html.
1. Create a database file
Open the
Java-based Oracle database self-built tool Library
When I learned how to operate Oracle databases in Java, I suddenly thought that I could create a tool class like php, which could greatly reduce the complexity of the Code. It can also improve work efficiency.
If java cannot build a tool class by itself, it is very rid
Navicat Premium is a multi-connection database management tool that allows you to connect to MySQL, Oracle, PostgreSQL, SQLite, and SQL Server databases at the same time with a single program, making it easier to manage different types of databases. Navicat Premium combines the functionality of other NAVICAT members. With the connectivity capabilities of different datab
I participated in a company project some time ago. This project is characterized by a large amount of data and traffic. Considering using the database horizontal table sharding policy, I did not find a table sharding tool after Google for a long time. Therefore, I wrote a database horizontal table sharding tool that su
Original post address: http://expert.csdn.net/Expert/topic/2931/2931668.xmlBecause the forum cannot restore more than 30 posts, this post is newly created.First of all, I would like to thank the enthusiastic help of lynx1111, leeboyan, and realgz. I would also like to thank islandnet (E rabbit), zhijiao (Tutorial), and kkkksunday (I am a pig younger brother) shuichangliu (life will surely get better and better !) Ghostzxp, terencegan, progress99, outwindows, benimarunikado )...... With enthusias
There is no need to take PDO to the operation of the database package into a tool class, because the previous use of MySQL operation database is directly called tool class method implementation, now with PDO, do not know whether to do a tool class
Reply to discussion (s
SQL * Loader is a data migration tool provided by the Oracle database system. It provides a command line method that allows you to load a large amount of data into the Oracle database in batches. Although both the Oracle database and the SQL Server database provide graphical
Database recovery is very important. This article will explain how to use the command line tool to restore the DB2 database, including the example of using the command line tool for your reference.
1. Disable "Control Center"
2. Open "IBM DB2"-"command line tool"-"command
directly copy the data from the source oracle database to the target database. This method is faster, but it also feels prone to errors, if the data import error occurs, you can continue importing other table data. Select a table from the source database, press Ctrl + C, select a table from the target database, and pr
can directly copy the data from the source oracle database to the target database. This method is faster, but it also feels prone to errors, if the data import error occurs, you can continue importing other table data. Select a table from the source database, press Ctrl + C, select a table from the target database, an
Sysbench is an easy-to-use stress testing tool that can test the CPU,MEMORY,FILEIO,MYSQL database;Sysbench Installation Method:The sysbench in the default Epel source is version 0.4 and is now in the 1.x version, and the master uses the 1.x versionGithub-->https://github.com/akopytov/sysbenchCentOS Installation Method:#curl-S Https://packagecloud.io/install/repositories/akopytov/sysbench/script.rpm.sh | sud
What kind of database management software should be considered by DBAs? This article will introduce you to the database management software Quest Central for your reference and hope to help you.
Quest Central is a multi-functional database management tool. The software integrates comprehensive
Two Kaspersky-related tools are packaged this time, which are the "Kaspersky virus database backup and restoration" and the "360 security guard Kabbah registration code repeat applicant" (The kav6 and kav7 activation codes are included in the compressed package, I have verified the availability of the kav7 activation code, and I am using the operating system Vista flagship version, kav7 ). The introduction of the two software is as follows:
Kaspersky
Tool usage: Transfers Oracle data to the Mysql database (Oracle database), and in turn transfers Mysql Data to the Oracle database (Mysql database ).
Attachment: http://download.csdn.net/detail/zou_hailin226/6320051
Tutorial (here is an example to copy data from the Orac
PRM an Oracle database disaster recovery ambulance Tool
In the real world, I believe many of my friends have encountered database or file system damages, and suddenly precious data cannot be accessed, which is too fatal for companies that use data as the foundation. In most scenarios, standard RMAN-based recovery procedures can solve such problems.
In a few scena
Xtrabackup is a MySQL database backup tool provided by Percona, officially introduced as an open source tool for hot provisioning of InnoDB and XTRADB databases.1. InstallationYum Install Percona-xtrabackup-y2. Create a databaseCreate DATABASE test;Use test;CREATE table bak (id int, name char (20)); Create a tableInser
Tags: style blog http color strong widthDatabase Repair Tool-Access database in *.mdb format onlyIntroduction:Access database operation has a serious bug, when the database file content is added, its file capacity is added?, but when the database content is deleted, its
Automatic database test data generation tool-testbytes
During database development, test case data should be generated in the database to test application access to the database. We may find that when the database contains only a
Tags: otherwise password HTTPS--format out alter INNODB existsDescription: MySQL innodb and MyISAM type database, the latest version of this tool seems to have been supported, previously may exist in the MyISAM only cold backup way of saying.To back up the specified library:Mysqldump-h127.0.0.1-uroot-p--lock-tables--events--triggers--routines--flush-logs--master-data=2--databases db1 DB2 db3 >./db.sqlBack U
Aqua Data Studio is a full IDE database development tool that provides 3 main functions: Data query and management tools. Tools for integrating data tools with source control and file systems. Help you create, edit, and execute SQL management tool scripting, as well as browse and modify the database organization. Provi
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