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Mysql high-speed import and export of large TXT text bitsCN.com Mysql high-speed import and export of large TXT text First, let's talk about how to import TXT files to mysql. The load data infile statement of loaddata and MySQL is used to quickly

MySQL study note 18: mathematical functions bitsCN.com absolute value functions ABS (x) and circumference ratio functions PI () mysql> SELECT ABS(0.5), ABS(-0.5), PI();+----------+-----------+----------+| ABS(0.5) | ABS(-0.5) | PI() |+----------+

MySQL select * output result sequence in case of indexed columns bitsCN.com MySQL select * output result sequence with indexed columns Create a table, a primary key column, and an index column. Insert a batch of data and call select * from test_ B.

MySQL master-master replication, modifying table structure bitsCN.com online MySQL master-master replication, modifying the table structure online I always thought that the dual-master architecture could solve the mysql table online DDL

How does mysql increase the query speed when processing millions of data? bitsCN.com How can mysql increase the query speed when processing millions of data? Recently, due to work needs, I began to pay attention to the optimization methods of

MySQL learning footprint record 02-SELECT bitsCN.com MySQL learning footprint record 02-SELECT Table structure and data used in this query mysql> SHOW COLUMNS FROM products; +------------+--------------+------+-----+---------+-------+| Field

Install and configure mysqlcluster7.3.2 bitsCN.com in Windows XP Install and configure mysql cluster 7.3.2 in windows xp Virtual Machine 1. installed in a virtual machine environment 1 192.168.131.21 (management node, storage node, SQL node) 2 192.

MySQL field constraints: null, notnull, default, auto_increment bitsCN.com MySQL field constraints: null, not null, default, auto_increment In MySQL, each field definition contains additional constraints or modifiers, which can be used to add

Usage and difference between having and where statements in mysql bitsCN.com Usage and difference of having and where statements in mysql When writing SQL statements, we often use where statements and rarely use having. In fact, the having

The hard disk space occupied by MYSQL to query database table indexes is bitsCN.com. Query Database usage Select concat (ROUND (SUM (index_length)/(1024*1024), 2), 'mb ')AS 'total Index size', CONCAT (ROUND (SUM (data_length)/(1024*1024), 2), 'mb')

Mysql auto-incrementing primary key-return method bitsCN.com Recently, it has always been a headache to initialize data for the current project, and the auto-increment of database IDs is getting bigger and bigger, so we need to re-start

MySQL backup and recovery-cold backup bitsCN.com Cold backup for MySQL backup and recovery 1. what is cold backup? In one sentence, cold backup refers to stopping database services, such as MySQL and Oracle, and then backing up the data

MySQL optimization-to do what you want, you must first sharpen the tool's EXPLAIN MySQLexplain BitsCN.com Recently, I have been getting familiar with MySQL and it is imminent to understand how to optimize it. to do this, you must first sharpen the

Mysql installation FAQ (the specified file is not found in the system and the system error occurs. 1067 the process is terminated unexpectedly) bitsCN.com When installing mysql, you will always encounter such problems. every time you reinstall mysql,

Comparison between mysql and postgresql (for reference) bitsCN.com To understand the difference between PostgreSQL and MySQL, I searched for the keyword MySQL vs PostgreSQL and read several articles on the first page. The following is a

MySQL4File 'C: mysql1_charsets ?. Conf 'notfound (Errcode: 22) solution bitsCN.com The following prompt appears in the PHP 4.4.1 + MySQL 5.1 environment: File 'C:/mysql/share/charsets /?. Conf 'not found (Errcode: 22) Character set' # 33' is not a

Install MySQL and configure remote connection in Ubuntu BitsCN.com Configuration of MySQL installation and remote connection configuration in Ubuntu 1. install MySQL in ubuntu and enter sudo apt-get install mysql-server in the ubuntu command line to

How to View MySql status-how does MySql view the number of connections and status? BitsCN.com How to view the connections and status of the mysql database How can I access the mysql command line? There is a bin directory under the mysql installation

How to view the MySql status-how does MySql view the number of connections and the status bitsCN.com? How to View MySql status-how does MySql view the number of connections and status and how does it enter the mysql command line? There is a bin

MySql official manual Study Notes 3-MySql stored procedure introduction bitsCN.com MySql official manual study notes 3-MySql stored procedure introduction link: MySql official manual study notes 1-MySql easy to use