MySQL

For security reasons, the database needs to be backed up frequently, or restored. For MySQL, the most convenient way may be to use the phpMyAdmin export, import functionality, but if your database volume is larger, as a WEB application phpMyAdmin

First, the concept:① Database Synchronization (master-slave Synchronous---Primary database writes to write data from server)② database Synchronization (primary primary Sync---Two database servers write data to each other) Second, for

You've completed your brand new app, and everything works just like a charm. Users to use your network. Everyone is happy. Then, suddenly, a big outbreak of users kills your MySQL server and your site is closed. What's the problem? How can you stop

After you get the demand, you will find that the MySQL database for both sites cannot be accessed remotely (security first). Then I think of the usual use of CSV file bulk input data. So Try importing the export using CSV. The import framework is

/** * Class Description: The MySQL database operation class * * using System; Using System.Data; Using MySql.Data.MySqlClient; namespace Niunan.BYLW.Utility {/// operations class for MySQL database////// public class Mysqlhelper { PRIVATE

To manipulate the table, you first need to select the database because the table exists in the database Select Database Mysql> Use school; Database changed After selecting the database, we can create the table in this database. Create a table

A few days ago wrote a MySQL cross table update of a summary, today we look at the cross table delete. After Mysql4.0, MySQL begins to support the cross table delete. MySQL can delete multiple table records in one SQL statement, or you can delete

The self-auto_increment function in MySQL is believed to be used by every phper, and knows how to set the field, but not all phper know how the auto_increment start value and increment are set! This article for you to share the MySQL field functions

This article analyzes the MySQL transaction problem in PHP. Share to everyone for your reference, specific as follows: For MyISAM databases, you can control the conduct of transactions: $MYSQLRL = mysql_connect ($db _config ["host"], $db

The problem is this:Table persons has two fields: ID and nameContent in text document Persons.txt (with tab split between each row of fields):1 Bush2 Carter3 BushUse the load data local infile "persons.txt" into table persons to import data into the

1. View the current character set: Copy Code code as follows: Show CHARACTER SET; 2, delete MySQL related directory Copy Code code as follows: rm-rf/usr/local/mysql/* installation directory

Recently always to initialize data for this project, make a lot of headaches, and the database ID become more and more, to let the self-increase starting from 1: Then use the following method: method One: If the previous data is not needed, you can

We usually have to count the number of connections in the database to refer to the total number of statistics, not subdivided into each IP. Now to monitor the number of connections per IP, the implementation is as follows: Method One: Copy

How do you modify the root password in the MySQL database? Here's a summary of some of the ways to modify the root user password 1: Using the Set Password statement to modify Mysql> Select User (); +----------------+ | user () | +----------

Our most commonly used Dbd::mysql module, I found is a lot of people in the place. Because the installation always fails, I will introduce the solution, such as I use CPANM installation, sometimes out of/home/nue2501j/work/dbd-mysql-4.010/blib /arch/

Show the existing database by showing Syntactic: Show DATABASES [like Wild] If you use the like wild section, the wild string can be a string that uses the SQL "%" and "_" wildcard characters. Features: Show databases lists the

When troubleshooting a deadlock problem for a customer, I encountered an interesting case involving a InnoDB clearance lock. I expect that the transaction should not have a lock for a WHERE clause does not match any of the rows, but I was wrong. Let'

When we run a MySQL client to connect to the MySQL server, it is not appropriate to specify our password in a way that is exposed to other users. There are four ways we can enter passwords, each of which has a certain risk. Here are the following

To access a MySQL server, you need to log in with a user account to proceed. Each MySQL user account has a number of properties associated with it, such as user name, password, and permissions and resource restrictions. "Permissions" defines what a

What is the difference between the SQL statements for the following three associated queries? SELECT * FROM film join Film_actor to (film.film_id = film_actor.film_id) select * from film join Film_actor USING (fi LM_ID) SELECT * from film,