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Catalog mysql generates a lot of data automatically Create random number generation Generate random string Generate random number, return varchar type data combination, such as cell phone number Create user table myisam engine Create stored procedure generate data Create table innodb engine mysql generates a lot of data automatically In or ...

Foreword: Today I will tell you: MySQL database table fuzzy/multiline/grouping/sorting/paging query and MySQL data type explanation, of course, if you are interested in the basic operation of the database--database creation/table addition/deletion check, you can see my article-- Basic operations for MySQL database tables (add, delete, change ch ...

This paper introduces the operation of adding, deleting, modifying and querying mysql database. 1. Install the database, pay attention to the installation of Connector NET. 2. Introduce MySql.Data.dll and add project reference. The general location of the file is: C:\Program Files (x86)\MySQL\Connector NET xx\Assemblies\v xx (determined by MySQ ...

Installation steps #decompression tar -zxvf mysql-5.6.33-linux-glibc2.5-x86_64.tar.gz #Copy the extracted mysql directory cp -r mysql-5.6.33-linux-glibc2.5-x86_64 /usr/local/mysql #Add user group groupadd mysql #Add user mysql to user group mysql useradd -g mysql mysql #install cd /usr/local/mysql/ mkdir ./data/mysql chown -R ...

ES Restful API GET, POST, PUT, DELETE, HEAD meaning: 1) GET: gets the current state of the request object. 2) POST: changes the current state of the object. 3) PUT: create an object. 4) DELETE: destroy the object. 5) HEAD: request to get the basic information of the object. The new document in ES (under Index/type) i ...

Generally, the chart of Zabbix Graph page is mostly used to write reports, forming a more intuitive report.However, if there are a large number of charts to view, it will lead to screenshots for each item of each host, which is inefficient. This time, I specially wrote a script to complete this work. In order to understand, I set up a zabbix t ...

Some very good enterprise level functions of the database are "military for a thousand days, military for a while". For example, the Recycle Bin function in Oracle 10g can play the role of special soldiers in special circumstances. For example, when you delete a table space or a user schema, you may delete many tables, including some ...

I. Introduction Opening the slow query log enables MySQL to record the statements that are queried for more than the specified time. Only by locating and analyzing the bottleneck of performance, can we better optimize the performance of the database system. 2, Parameter description Slow query log slow query on status Slow q ...

PyMySQL installation Before using PyMySQL, we need to make sure PyMySQL is installed. PyMySQL download address: https://github.com/PyMySQL/PyMySQL. If it is not already installed, we can use the following command to install the latest version of PyMySQL: $ pip install PyMySQL If your system does not support the pip command ...

Some sql runtime is time-consuming, consumes system resources, and cannot be further optimized, and each time the data is obtained, it does not change much. Then the information obtained by this sql statement will be cached for the next execution This saves system resources very much View query cache size mysql> selec ...