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
https://dev.mysql.com/cast-functions.html
A number used in string context is converted to a string: mysql> SELECT CONCAT('hello you ',2); -> 'hello you 2' For information about implicit conversion of numbers to strings, see Section 12.2, “Type Conversion in Expression Evaluation”. (In ... Table 12.14 Cast Functions and Operators Name Description BINARY Cast a string to a binary string CAST() Cast a value as a certain type CONVERT() Cast a value as a certain type Cast functions and operators enable conversion of values from one data type to ...
https://dev.mysql.com/change-master-to.html
The text of a running CHANGE MASTER TO statement, including values for MASTER_USER and MASTER_PASSWORD, can be seen in the output of a concurrent SHOW PROCESSLIST statement. (The complete text of a START SLAVE statement is also visible to SHOW ...] ...
https://dev.mysql.com/charset-applications.html
The examples shown here assume use of the latin1 character set and latin1_swedish_ci collation in particular contexts as an alternative to the defaults of utf8mb4 and utf8mb4_0900_ai_ci. For example, if you will send statements using UTF-8 text ...
https://dev.mysql.com/charset-binary-collations.html
Nonbinary strings (as stored using the CHAR, VARCHAR, and TEXT data types) have a character set and collation other than binary. For nonbinary strings (CHAR, VARCHAR, and TEXT values), the pad attribute determines how trailing spaces are treated in ... This section describes how the binary collation for binary strings compares to _bin collations for nonbinary ...
https://dev.mysql.com/charset-column.html
Every “character” column (that is, a column of type CHAR, VARCHAR, a TEXT type, or any synonym) has a column character set and a column collation. CREATE TABLE t1 ( col1 CHAR(10) CHARACTER SET utf8 COLLATE utf8_unicode_ci ) CHARACTER SET latin1 ...
https://dev.mysql.com/create-table-foreign-keys.html
Consequently, BLOB and TEXT columns cannot be included in a foreign key because indexes on those columns must always include a prefix length. As of NDB 8.0.16: For NDB tables, ON DELETE CASCADE is not supported where the child table contains one or ... MySQL supports foreign keys, which permit cross-referencing related data across tables, and foreign key constraints, which help keep the related data ...
https://dev.mysql.com/csv-storage-engine.html
The CSV storage engine stores data in text files using comma-separated values format. When you create a CSV table, the server creates a plain text data file having a name that begins with the table name and has a .CSV extension. The CSV storage ...
https://dev.mysql.com/data-type-defaults.html
The BLOB, TEXT, GEOMETRY, and JSON data types cannot be assigned a default value. Data type specifications can have explicit or implicit default values. A DEFAULT value clause in a data type specification explicitly indicates a default value for a ...
https://dev.mysql.com/events-statements-current-table.html
To change this value, set the performance_schema_max_sql_text_length system variable at server startup. DIGEST_TEXT The normalized statement digest text, or NULL if the statements_digest consumer is no. Consequently, values selected from the ...The ...
https://dev.mysql.com/events-table.html
EVENT_DEFINITION The text of the SQL statement making up the event's DO clause; in other words, the statement executed by this event. EVENT_COMMENT The text of the comment, if the event has one. The EVENTS table provides information about Event ...
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-text-p-11.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
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.
