Rechercher dans le manuel MySQL

Displaying 101 to 110 of 132 total results
https://dev.mysql.com/miscellaneous-optimization-tips.html
If you have data that does not conform well to a rows-and-columns table structure, you can pack and store data into a BLOB column. This section lists a number of miscellaneous tips for improving query processing speed: If your application makes ...
https://dev.mysql.com/myisam-maintenance-schedule.html
If you are performing many updates to MyISAM tables with dynamic-sized rows (tables with VARCHAR, BLOB, or TEXT columns) or have tables with many deleted rows you may want to defragment/reclaim space from the tables from time to time. It is a good ...
https://dev.mysql.com/myisam-table-formats.html
When you use CREATE TABLE or ALTER TABLE for a table that has no BLOB or TEXT columns, you can force the table format to FIXED or DYNAMIC with the ROW_FORMAT table option. Two of them, fixed and dynamic format, are chosen automatically depending on ...
https://dev.mysql.com/mysql-cluster-disk-data-storage-requirements.html
In a Disk Data table, the first 256 bytes of a TEXT or BLOB column are stored in memory; only the remainder is stored on disk. The following items apply to Disk Data storage requirements: Variable-length columns of Disk Data tables take up a fixed ...
https://dev.mysql.com/mysql-cluster-limitations-database-objects.html
Each BLOB or TEXT column contributes 256 + 8 = 264 bytes to this total. Some database objects such as tables and indexes have different limitations when using the NDBCLUSTER storage engine: Database and table names. When using the NDB storage ...
https://dev.mysql.com/mysql-cluster-limitations-exclusive-to-cluster.html
NDB Cluster cannot produce a binary log for tables having BLOB columns but no primary key. The following are limitations specific to the NDB storage engine: Machine architecture. All machines used in the cluster must have the same architecture.
https://dev.mysql.com/mysql-cluster-ndb-innodb-usage.html
When comparing application feature requirements to the capabilities of InnoDB with NDB, some are clearly more compatible with one storage engine than the other. The following table lists supported application features according to the storage ...
https://dev.mysql.com/mysql-cluster-ndbinfo-transporters.html
The following table provides information about the columns in the transporters table. For each column, the table shows the name, data type, and a brief description. Additional information can be found in the notes following the table. This ...
https://dev.mysql.com/mysql-cluster-online-operations.html
Columns to be added online cannot use the BLOB or TEXT type, and must meet the following criteria: The columns must be dynamic; that is, it must be possible to create them using COLUMN_FORMAT DYNAMIC. MySQL NDB Cluster 8.0 supports online table ...
https://dev.mysql.com/mysql-command-options.html
--binary-mode This option helps when processing mysqlbinlog output that may contain BLOB values. mysql supports the following options, which can be specified on the command line or in the [mysql] and [client] groups of an option file. For ...
Displaying 101 to 110 of 132 total results

Rechercher dans le manuel MySQL

Traduction non disponible

Le manuel MySQL n'est pas encore traduit en français sur l'infobrol. Seule la version anglaise est disponible pour l'instant.

Document créé le 26/06/2006, dernière modification le 26/10/2018
Source du document imprimé : https://www.gaudry.be/mysql-rf-fct-blob-p-11.html

L'infobrol est un site personnel dont le contenu n'engage que moi. Le texte est mis à disposition sous licence CreativeCommons(BY-NC-SA). Plus d'info sur les conditions d'utilisation et sur l'auteur.

Références

  1. Consulter le document html Langue du document :en Manuel MySQL : https://dev.mysql.com/

Ces références et liens indiquent des documents consultés lors de la rédaction de cette page, ou qui peuvent apporter un complément d'information, mais les auteurs de ces sources ne peuvent être tenus responsables du contenu de cette page.
L'auteur de ce site est seul responsable de la manière dont sont présentés ici les différents concepts, et des libertés qui sont prises avec les ouvrages de référence. N'oubliez pas que vous devez croiser les informations de sources multiples afin de diminuer les risques d'erreurs.

Table des matières Haut