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CREATE PROCEDURE test1 (in a int)//create creation; procedure stored procedure; test1 is stored procedure name or any parameter must be added ()Begin//StartSELECT * FROM
There was a long time ago csdn the user "Account password Disclosure" event, if their 09-year backup file is encrypted, I think the loss will not be so heavy. So when we back up the database, we also need to encrypt the backup file, in the past in
When inserting records using the Insert SELECT statement, the following guidelines must be followed.
When you select data with the SELECT statement, you cannot select rows from the table where the data is inserted.
Specifies that the inserted
May be IP is not set good
Problem: MySQL permissions are set correctly, but still cannot be accessed remotely. The 3306 port was not opened by Telnet.
Analysis: MySQL defaults to bind only 127.0.0.1, that is, only on this computer to access Port 33
There are two simple methods in MySQL to load data into a MySQL database from a previously backed up file.
LOAD Data import:MySQL provides the load data statement as a bulk load. The following is an example declaration that reads a file dump.txt,
Simple Unique index:
A table that can create a unique index. A unique index means that two rows cannot have the same index value. Here is the syntax to create the index table
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CREATE
First, install and configure MySQL
1.1 Execute Yum command to install MySQLYum-y install MySQL Mysql-server
1.2 Add MySQL to boot and start MySQL immediatelyChkconfig–levels 235 mysqld on/etc/init.d/mysqld Start
1.3 Set the MySQL root account
Mysql-u User name-p*****//Enter databaseUse database name;//Select DatabaseShow databases;//View Databasedrop database name;//delete databasesShow create database data name;//View the statement that created the databasesCreate DATABASE Database name
1, locate the My.ini file in the MySQL database installation directory, change the value of Default-character-set to default-character-set=gb2312 (modify two places), Save, reboot.2. Locate the Web. config file for the ASP. Add tag responseencoding=
Objective:In Oracle, a sequence (Sequence) is generally used to process primary key fields, and there is no sequence in MySQL, but MySQL provides self-growth (increment) for similar purposes, but only self-increment, and cannot set step size, start
In practical application, the system design cannot anticipate the user's final query condition. The usual practice is to give some query conditions that limit the death of the user. Business changes, it is necessary to redesign the interface, add
MySQL for security, by default users are allowed to log on locally only, but in this case, you still need to use the user for remote connection, so that they can be remotely required to do the following:First, allow the root user to telnet anywhere,
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