Rechercher dans le manuel MySQL

13.7.6.4 SHOW COLLATION Syntax

Contents
  1. SHOW COLLATION
  2.     [LIKE 'pattern' | WHERE expr]

This statement lists collations supported by the server. By default, the output from SHOW COLLATION includes all available collations. The LIKE clause, if present, indicates which collation names to match. The WHERE clause can be given to select rows using more general conditions, as discussed in Section 25.42, “Extensions to SHOW Statements”. For example:

  1. mysql> SHOW COLLATION WHERE Charset = 'latin1';
  2. +-------------------+---------+----+---------+----------+---------+
  3. | Collation         | Charset | Id | Default | Compiled | Sortlen |
  4. +-------------------+---------+----+---------+----------+---------+
  5. | latin1_german1_ci | latin1  |  5 |         | Yes      |       1 |
  6. | latin1_swedish_ci | latin1  |  8 | Yes     | Yes      |       1 |
  7. | latin1_danish_ci  | latin1  | 15 |         | Yes      |       1 |
  8. | latin1_german2_ci | latin1  | 31 |         | Yes      |       2 |
  9. | latin1_bin        | latin1  | 47 |         | Yes      |       1 |
  10. | latin1_general_ci | latin1  | 48 |         | Yes      |       1 |
  11. | latin1_general_cs | latin1  | 49 |         | Yes      |       1 |
  12. | latin1_spanish_ci | latin1  | 94 |         | Yes      |       1 |
  13. +-------------------+---------+----+---------+----------+---------+

SHOW COLLATION output has these columns:

  • Collation

    The collation name.

  • Charset

    The name of the character set with which the collation is associated.

  • Id

    The collation ID.

  • Default

    Whether the collation is the default for its character set.

  • Compiled

    Whether the character set is compiled into the server.

  • Sortlen

    This is related to the amount of memory required to sort strings expressed in the character set.

To see the default collation for each character set, use the following statement. Default is a reserved word, so to use it as an identifier, it must be quoted as such:

  1. mysql> SHOW COLLATION WHERE `Default` = 'Yes';
  2. +---------------------+----------+----+---------+----------+---------+
  3. | Collation           | Charset  | Id | Default | Compiled | Sortlen |
  4. +---------------------+----------+----+---------+----------+---------+
  5. | big5_chinese_ci     | big5     |  1 | Yes     | Yes      |       1 |
  6. | dec8_swedish_ci     | dec8     |  3 | Yes     | Yes      |       1 |
  7. | cp850_general_ci    | cp850    |  4 | Yes     | Yes      |       1 |
  8. | hp8_english_ci      | hp8      |  6 | Yes     | Yes      |       1 |
  9. | koi8r_general_ci    | koi8r    |  7 | Yes     | Yes      |       1 |
  10. | latin1_swedish_ci   | latin1   |  8 | Yes     | Yes      |       1 |
  11. ...

Collation information is also available from the INFORMATION_SCHEMA COLLATIONS table. See Section 25.4, “The INFORMATION_SCHEMA COLLATIONS Table”.


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-show-collation.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