Reposted on this blog (thanks to this friend ):
Http://hi.baidu.com/3g13/blog/item/f12dc5131313aa1e5baf5301.html
I have always liked text-based databases, which are simple, convenient, and easy to save. Recently, the MySQL database of a website
Sybase supports two backup methods: one is to back up a single table and the other is to back up the entire database.
1. Single Table backup and recoveryYou only need to use the BCP command enhanced by SYBASE:BCP command format:BCP database name ..
Oracle 10gBasic Database Query statements-above--Reference: Zhang lie Zhang Jianzhong Database Administrator training handout
Principles for writing SQL statements
The case is not sensitive, but the case sensitivity of single and double quotes.
Oracle queries and compiles data dictionaries, and oracle compiles dictionaries
If you need to write a data dictionary during project delivery, you can use the following method to first run a line-by-line SQL statement.
Select. TABLE_NAME AS table
This article is based on Mysql storage program usage
Storage Functions
The storage function returns the result to the caller.
Create an instance using a storage functionMysql> delimiter $ // set $ as the separator mysql> create function
Mysql reorganizes notes -- woods memo, mysql -- woods================================ SQL memo CRUD queries multi-table events and so on ==== ==================================Example 1. database 1. create database [if not exists] db_name [character
PostgreSQL operations-Basic psql commands and postgresql operations-psql
1. Establish a database connection----------------Access PostgreSQL database: psql-h IP address-p port-U Database Name
Enter the Database Password.
2. Access the database
Notes on common Oracle commands and common oracle commands
Login without a password: sys as sysdba
View all current databases: select */name from v $ database;
View the current database connection user: show user
View All Tables of the
1. Oracle startup and Shutdown
1. In a single-host environment
To start or shut down the Oracle system, you must first switch to the Oracle user, as shown below:
Su-Oracle
A. Start the Oracle SystemOracle> svrmgrlSvrmgr> connect internalSvrmgr>
Directory:
SQL statement... 1
1. Database and table operations... 1
1. Common Database and table operations... 1
2. Operate the database... 2
3. operation table... 3
4. add, delete, modify, and query data in the table... 4
5. Table
Django-admin.py startproject mysite
This command creates a mysite directory in the current directory.
Django-admin.py file in c: \ python27 \ Lib \ Site-packages \ Django \ bin folder, you can add this directory to the system path.
Django has a
Mac_MySQL installation, mysql
1. Download and install
Go to the MySQL official website at http://dev.mysql.com/downloads/mysql/, and download about 164 MB of Community Server.
On the following page, select No thanks, just start my download]
The
I. Download. Here we use the green decompressed version.
Http://mirror.services.wisc.edu/mysql/Downloads/MySQL-5.1/mysql-noinstall-5.1.32-win32.zip
2. Configure MySQL Parameters
1. decompress the green software to D: \ AppServ \ MySQL.Set system
1. Install centos2. Install the library required by ora3. Modify the centos Kernel4. create user groups and directory structures5. Install ora11g2r6. Install the SQL plus paging program and help patch7. self-starting script8. Common commands
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This topic describes three methods for installing IIS:
Use the "Configure your server wizard ".
Use "add or delete programs" in "Control Panel ".
No one is involved in installation.
This topic also lists the directories created during
MySQL green version installation method graphic tutorial bitsCN.com
I. Download. here we use the green decompressed version.
Http://mirror.services.wisc.edu/mysql/Downloads/MySQL-5.1/mysql-noinstall-5.1.32-win32.zip
2. configure MySQL parameters
Read Catalogue
Order
Create a table
View Table
Modify Table
Delete a table
Series Index
This article is copyright Mephisto and Blog Park is shared, welcome reprint, but must retain this paragraph statement, and give
One, CLI operation:1. General Settings:Set hive.cli.print.header=true; Print query header, need to display settings set hive.mapred.mode=strict; Hive strict mode, partition table must be in where partition filter, not allow Cartesian product
MySQL database CRUD statement quick start bitsCN.com
MySQL database CRUD statement quick start SQL statement SQL statement, a language database used to operate the database, simply understood as a file on the hard disk, SQL statements that can store
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