No cache version.

Caching disabled. Default setting for this page:enabled (code DEF204)
If the display is too slow, you can disable the user mode to view the cached version.

Rechercher dans le manuel MySQL

Search Results
MySQL 8.0 Reference Manual
Displaying 11 to 17 of 17 total results
25.17 The INFORMATION_SCHEMA PARTITIONS Table
https://dev.mysql.com/partitions-table.html
AVG_ROW_LENGTH The average length of the rows stored in this partition or subpartition, in bytes. Each row in this table corresponds to an individual partition or subpartition of a partitioned table. The PARTITIONS table has these columns: ...
5.1.8 Server System Variables
https://dev.mysql.com/server-system-variables.html
The MySQL server maintains many system variables that configure its operation. System variables can be set at server startup using options on the command line or in an option file. Most of them can be changed dynamically at runtime using the SET ...
9.3 Keywords and Reserved Words
https://dev.mysql.com/keywords.html
Certain keywords, such as SELECT, DELETE, or BIGINT, are reserved and require special treatment for use as identifiers such as table and column names. This may also be true for the names of built-in functions. Reserved words are permitted as ...
8.2.3 Optimizing INFORMATION_SCHEMA Queries
https://dev.mysql.com/information-schema-optimization.html
Some INFORMATION_SCHEMA tables contain columns that provide table statistics: STATISTICS.CARDINALITY TABLES.AUTO_INCREMENT TABLES.AVG_ROW_LENGTH TABLES.CHECKSUM TABLES.CHECK_TIME TABLES.CREATE_TIME TABLES.DATA_FREE TABLES.DATA_LENGTH ...
16.7 The MERGE Storage Engine
https://dev.mysql.com/merge-storage-engine.html
The MERGE storage engine, also known as the MRG_MyISAM engine, is a collection of identical MyISAM tables that can be used as one. “Identical” means that all tables have identical column data types and index information. You cannot merge MyISAM ...
15.6.1.1 Creating InnoDB Tables
https://dev.mysql.com/using-innodb-tables.html
row *************************** Name: t1 Engine: InnoDB Version: 10 Row_format: Compact Rows: 0 Avg_row_length: 0 Data_length: 16384 Max_data_length: 0 Index_length: 0 Data_free: 0 Auto_increment: NULL Create_time: 2015-03-16 15:13:31 Update_time: ... To create an InnoDB table, use the CREATE TABLE ...
4.5.4 mysqldump — A Database Backup Program
https://dev.mysql.com/mysqldump.html
The mysqldump client utility performs logical backups, producing a set of SQL statements that can be executed to reproduce the original database object definitions and table data. It dumps one or more MySQL databases for backup or transfer to ...

Find a PHP function

Document created the 26/06/2006, last modified the 26/10/2018
Source of the printed document:https://www.gaudry.be/en/mysql-rf-fct-avg-row-length-p-2.html

The infobrol is a personal site whose content is my sole responsibility. The text is available under CreativeCommons license (BY-NC-SA). More info on the terms of use and the author.

References

  1. View the html document Language of the document:en Manuel MySQL : https://dev.mysql.com/

These references and links indicate documents consulted during the writing of this page, or which may provide additional information, but the authors of these sources can not be held responsible for the content of this page.
The author This site is solely responsible for the way in which the various concepts, and the freedoms that are taken with the reference works, are presented here. Remember that you must cross multiple source information to reduce the risk of errors.

Contents Haut