MySQL

SQLyog is a powerful Mysql GUI client with simple and generous interface. Sqlyog8.13 and sqlyog8.13 have been released by the end of this blog. Its general version is a free version-already a leader in similar software However, the software prompt

Similarities: Truncate, delete without where clause, and drop both delete table data. Differences 1. truncate and delete: delete only data. Do not delete the table structure (Definition) The drop statement will delete the constraints, triggers, and

Tutorial for helping customers: Mysql, as a very powerful database software, still has many shortcomings in graphic interface management. Therefore, for webmasters, it is an important course to better master Mysql commands. Today, let's take a look

Error No:1135 Problem Analysis: Due to database server problems, a new thread cannot be created for database operations. There are two possible reasons: 1. MySQL threads are too open. 2. The server system memory overflows. 3. damaged

DocumentAfter the MYSQL database is installed, the default maximum number of connections is 100. Generally, the number of connections to forums or websites with a higher traffic is far from enough. There are two ways to increase the default number

Recently, the CPU usage of MYSQL service process (mysqld-nt.exe) on a friend host (Windows 2003 + IIS + PHP + MySQL) is 100% high. This host has about 10 databases, which are called for 10 Websites respectively. According to A Friend test, lead to

MYSQL tutorialThe following is an instance of the MySQL database trigger. To view the trigger details in the MySQL database, you can use the following statement: before using the show triggers statement, you must specify the database to view. 1)

Sun Microsystems announced the launch of a server-specific MySQL solution. The MySQL solution focuses on solving the key issues of the customer in terms of x86 efficiency, virtualization, multi-level deployment, rich media storage and backup, while

After creating a database and a table, we first think of inputting data into the database table. Next we will discuss how to add data to the database: 1. The common method is insert statements. Reference content is as follows:Insert

Note that the following sections are mainly related to DOUBLE and FLOAT columns because of the inaccuracy of floating point numbers. MySQL uses a 64-bit DECIMAL value to perform the DECIMAL operation. when processing a DECIMAL column, it should be

The School of building a website of Fire Station has compiled some MYSQL skills and practical articles, which will be sent to you one after another. This article mainly introduces the PHP code of the instance of any data stored in mysql and the

When using MySQL, errors such as ERROR 1005 (HY000): Can't create table may easily occur when the operation is not performed. It may take a long time for many webmasters to find out the cause of the problem. I hope this article will help webmasters

During this time, the server crashed twice and no reason was found. I saw an error message email sent from the Forum today, remembering the problem that may be caused by the default connections of mysql, the default number of connections is only 100.

Preface: This article describes a full-text retrieval (search engine) architecture of tens of millions of data records verified by the production environment. This document only lists the excerpts from the previous chapters and does not provide the

MySQL 4.1 Character Set Support includes two Character sets (Character set) and Collation ). // Title: MySQL character set (my summary)// By dx_andy// Time: 2007.8.27 evening// Test environment: win32 MySQL 5.0.45// Cause: Garbled MySQLSince the

I believe that when you use the transaction rollback method to operate multiple table records in the MSSQL database, the error message "cannot create a new connection in the manual or distributed transaction mode" appears frequently, this problem

Some common MySQL indexes and Profiling tips,1. view the index of a tableMysql> show indexes from [tablename] \ G Table: album Non_unique: 0 Key_name: PRIMARY Seq_in_index: 1 Column_name: album_id Collation: A Cardinality: 29 Sub_part: NULL Packed:

Summary of MySQL built-in Time query usageMysql> SELECT year (curdate ());+ ----------------- +| Year (curdate () |+ ----------------- +| 1, 2009 |+ ----------------- +1 row in set (0.00 sec)Mysql> SELECT month (curdate ());+ ------------------ +|

Use EXECL to convert TimestampThe formula is: =(xxxxxxxxxx+8*3600)/86400+70*365+19 Use a MYSQL statement to explain the timestampSyntax example: SELECT FROM_UNIXTIME(1234567890, '%Y-%m-%d %H:%i:%S') Appendix:In mysql, the storage type of a time

With DedeCMS, PHPCMS, Empire, Discuz! With the popularization of well-known web management systems such as PHPWIND and WordPress, Mysql databases are widely used, and more problems are raised about Mysql, today, the Helper's house editor happened to