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  How to tune the performance of MySQL

  This article mainly tells you briefly how to tune the performance of MySQL. You can look up the relevant professional terms on the Internet or find some related books to supplement them. We will not dabble here. Let's go straight to the topic. I hope this article on how to tune the performance of MySQL can bring you some.

  2022-06-01 19:09:37 Views: 256
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  How to realize join query on MYSQL multiple tables

  The following together to understand how to achieve the MYSQL multi-table join query, I believe you will benefit a lot after reading, the text is not in the essence, hope that how to achieve the MYSQL multi-table join query this short content is what you want. The difference between three connection modes: INNER JOIN (internal connection)

  2022-06-01 19:09:31 Views: 238
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  Statistical query of oracle tablespace usage

  Query tablespace usage SELECT Upper (F.TABLESPACE_NAME) "tablespace name", D.TOT_GROOTTE_MB "table"

  2022-06-01 19:09:30 Views: 263
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  A single quote that changes the performance of MySQL

  Today, the editor will bring you an article about how a single quote can change the performance of MySQL. The editor thinks it is very practical, so I will share it for you as a reference. Let's follow the editor and have a look. Use a field of type string as the primary key. The problem arises when in the query statement, the

  2022-06-01 19:09:23 Views: 277
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  Full backup of MySQL database

  1. The importance of database backup in the production environment, the security of the database is very important, any loss of data may have serious consequences. The importance of database backup is mainly reflected in: (1) improve the high availability and disaster recoverability of the system, when the database system crashes, no

  2022-06-01 19:09:23 Views: 300
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  Linux/centos oracle10g control connection IP address

  Oracle controls the connection of ip simply setting the allowed IP and prohibited IP in 9i and later, modifying sqlnet.ora is actually the best and fastest way in the linux version of oracle, the default is $cd without the file sqlnet.ora.

  2022-06-01 19:09:20 Views: 274
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  Master several uses of regex in MongoDB in 3 minutes

  3 minutes to master several uses of regex in MongoDB background Part1: friends who use MySQL or other relational databases first know that the use of fuzzy queries is similar to: SELECT * FROM products WHERE

  2022-06-01 19:09:11 Views: 243
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  Detailed explanation of the concept of getting started with elk

  For the first step, let's start with a simple tutorial that covers basic concepts such as indexing, search, and aggregations. Through this tutorial, we can get you to Elastics

  2022-06-01 19:09:10 Views: 229
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  Summary of SQL optimization

  SQL is a skill that every Java programmer must return. For all kinds of complex business in the project, whether you can write efficient and concise SQL plays an important role in the efficiency and stability of the project. Through personal understanding and online information, this paper summarizes the common SQ.

  2022-06-01 19:09:09 Views: 260
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  OGG operation and maintenance optimization script (11)-query maintenance class-operation selection

  File: ggedit path: $HOME/ggscript function: this script is used to choose to use other scripts to initialize .profile and .bash _ profile files through alias aliases, using #! / bin/ba as an edit instruction

  2022-06-01 19:09:09 Views: 221
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  MySQL DML operation-practice of multi-table joint query

  1. Background * Multi-table join query is a way to record different tables together * the federation (join) planned in the SQL standard is roughly divided into inner join outer join and full join. Among them, the outer connection is divided into left outer connection and right outer connection. two。 Example of an internal connection (inner joi

  2022-06-01 19:09:09 Views: 300
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  Centos5.9 uses RPM package to build lamp platform

  1. Environment introduction os:oracle centos 5.9apache:httpd-2.2.3-74.0.1.el5php:php53-5.3.3-13.el5_8mysql:mysql-server-5.

  2022-06-01 19:09:04 Views: 206
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  Prerequisites for the use of composite indexes

  PS: I didn't bother to edit the picture again. I just copied me from the log on 51. Background: today, I received a phone call from the project manager of a project, telling me that there are several super slow queries in the production environment, that is, querying the data of a single table, and the query conditions are also very simple, but after adding the index, there is no index.

  2022-06-01 19:09:03 Views: 217
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  Influxdb relay ubuntu

  File version: V1.0 File number: R&D0031 release date: compilation: approval: Influxdb relay + grafana server directory 1. Introduction 31.1 features 41.2 influxdb comparison 41.3 uses 42. Department

  2022-06-01 19:08:58 Views: 282
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  Configure mysql replication error logging

  The following content applies to server-id= 1 in the [mysqld] paragraph. This line must be 1. 1 can be another number. Generally speaking, the last bit of IP is recommended. Log-bin=mysql-bin must have this, which is required to turn on binlog binary. Binlog

  2022-06-01 19:08:58 Views: 270
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  Ansible--roles

  Role is similar to state,state in salt-stack, which has a certain organizational structure. Role is the directory organization structure of playbook in ansible. If everything is written into playbooks, it may lead to pla.

  2022-06-01 19:08:58 Views: 230
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  Realization of wordpress by Modular LAMP and fpm LAMP

  The combination of Linux+Apache+Mysql/MariaDB+Perl/PHP/Python is often used to build open source software for dynamic websites or servers. With the vigorous development of open source trend, open source LAMP has been working with J2EE and .net commercial software.

  2022-06-01 19:08:55 Views: 216
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  MongoDB schema-free vs MySQL DDL

  The document database (Document-orient Database) supports Schema-Free, and its one-line record format is: {"name": "design", "value": "straight board"}}, actually using KEY/VA

  2022-06-01 19:08:55 Views: 224
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  What are the disadvantages of the two persistence methods of redis?

  This article mainly introduces in detail the shortcomings of the two persistence methods of redis. The detailed explanation of picture and text is easy to learn, and the effect of reading and understanding with the code is better. Interested friends can refer to it. 1. Defect of RDB persistence mode 1. Description of the problem: 200parallel channels, simulation constantly writing R.

  2022-06-01 19:08:47 Views: 292
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  The pit of MySQL & quot;replace into" adds id, so there is a problem with the opportunity. This problem will not appear on mysql5.7.17.

  The pit of MySQL "replace into" adds id, and there is a problem with the opportunity. This problem will not appear on mysql5.7.17. The following are online materials, from: http://www.cnblogs.com/monian/

  2022-06-01 19:08:47 Views: 274