Rechercher dans le manuel MySQL

Displaying 51 to 60 of 192 total results
https://dev.mysql.com/mysql-nutshell.html
The TempTable storage engine provides efficient storage for VARCHAR and VARBINARY columns. This section summarizes what has been added to, deprecated in, and removed from MySQL 8.0. A companion section lists MySQL server options and variables that ...
https://dev.mysql.com/create-table-generated-columns.html
Values of a generated column are computed from an expression included in the column definition. Generated column definitions have this syntax: col_name data_type [GENERATED ALWAYS] AS (expr) [VIRTUAL | STORED] [NOT NULL | NULL] [UNIQUE [KEY]] ...
https://dev.mysql.com/mysql-cluster-online-add-node-example.html
In this section we provide a detailed example illustrating how to add new NDB Cluster data nodes online, starting with an NDB Cluster having 2 data nodes in a single node group and concluding with a cluster having 4 data nodes in 2 node groups.
https://dev.mysql.com/internal-temporary-tables.html
The TempTable storage engine provides efficient storage for VARCHAR and VARBINARY columns. VARCHAR and VARBINARY column values are padded to the maximum column length, in effect storing them as CHAR and BINARY columns. In some cases, the server ...
https://dev.mysql.com/sys-sys-get-config.html
in_variable_name VARCHAR(128): The name of the configuration option for which to return the value. in_default_value VARCHAR(128): The default value to return if the configuration option is not found in the sys_config table. Given a configuration ...
https://dev.mysql.com/binary-varbinary.html
The BINARY and VARBINARY types are similar to CHAR and VARCHAR, except that they contain binary strings rather than nonbinary strings. The permissible maximum length is the same for BINARY and VARBINARY as it is for CHAR and VARCHAR, except that ...
https://dev.mysql.com/mysql-cluster-replication-schema.html
Replication in NDB Cluster makes use of a number of dedicated tables in the mysql database on each MySQL Server instance acting as an SQL node in both the cluster being replicated and the replication slave (whether the slave is a single server or a ...
https://dev.mysql.com/group-replication-enterprise-backup.html
MySQL Enterprise Backup is a commercially-licensed backup utility for MySQL Server, available with MySQL Enterprise Edition. This section explains how to back up and subsequently restore a Group Replication member using MySQL Enterprise Backup. The ...
https://dev.mysql.com/encryption-functions.html
This will avoid potential problems with trailing space removal or character set conversion that would change data values, such as may occur if you use a nonbinary string data type (CHAR, VARCHAR, TEXT). character is added to avoid problems with ...
https://dev.mysql.com/silent-column-changes.html
If strict SQL mode is not enabled, a VARCHAR column with a length specification greater than 65535 is converted to TEXT, and a VARBINARY column with a length specification greater than 65535 is converted to BLOB. Specifying the CHARACTER SET binary ... In some cases, MySQL silently changes column specifications from those given in a CREATE TABLE or ALTER TABLE ...
Displaying 51 to 60 of 192 total results

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-varchar-p-6.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