Manual:Categorylinks table/pl

This page is a translated version of the page Manual:Categorylinks table and the translation is 46% complete.
Podręcznik:Spis treści Opis i struktura bazy danych MediaWiki Tabela categorylinks
Wersja MediaWiki:
1.3

Tabela categorylinks przechowuje wszystkie wpisy o linkach typu [[Category:Title]] lub [[Category:Title|sortkey]], służące do umieszczania strony w kategorii o nazwie Title (dla których przypisana strona opisu może, ale nie musi istnieć). Linki zaczynające się dwukropkiem, na przykład [[:Category:Title]], nie są przechowywane w tabeli categorylinks, ponieważ tworzą zwykły klikalny link wewnętrzny (w tym przypadku prowadzący do strony Category:Title). Edytowalna część stron kategorii jest przechowywana tak jak normalne strony.

Są cztery indeksy wspomagające wydajność:

  • The concatenation of cl_from and cl_to (for when an article is edited)
  • The concatenation of cl_to, cl_type, cl_sortkey, and cl_from (for showing articles in order)
  • The concatenation of cl_to and cl_timestamp
  • cl_collation

Pola

cl_from

Przechowuje page.page_id artykułu, w którym link został umieszczony (skategoryzowany artykuł).

cl_to

Przechowuje nazwę kategorii w formacie page_title (czyli z _ oraz bez prefiksu przestrzeni nazw).

cl_sortkey

Stores the title by which the page should be sorted in a category list. This is the binary sortkey, that depending on $wgCategoryCollation may or may not be readable by a human (but should sort in correct order when comparing as a byte string), and is not valid UTF-8 whenever the database truncates the sortkey in the middle of a multi-byte sequence.

cl_timestamp

Przechowuje czas kiedy link został ostatnio zaktualizowany w tabeli.

cl_sortkey_prefix

This is either the empty string if a page is using the default sortkey (aka the sortkey is unspecified). Otherwise it is the human readable version of the first part of cl_sortkey. Needed mostly so that cl_sortkey can be easily updated in certain situations without re-parsing the entire page. More recently added values are valid UTF-8 (see gerrit:449280).

cl_collation

Wersja MediaWiki:
1.17

What collation is in use. Used so that if the collation changes, the updateCollation.php script knows what rows need to be fixed in db.

cl_type

Rodzaj strony (file (plik), subcat (podkategoria) lub page (strona)). Wykorzystywane do efektywnego oddzielnego wyświetlania tych rodzajów stron na stronie kategorii.

Podsumowanie struktury

Wersja MediaWiki:
1.17

DESCRIBE categorylinks;

+-------------------+------------------------------+------+-----+-------------------+-----------------------------+
| Field             | Type                         | Null | Key | Default           | Extra                       |
+-------------------+------------------------------+------+-----+-------------------+-----------------------------+
| cl_from           | int(10) unsigned             | NO   | PRI | 0                 |                             |
| cl_to             | varbinary(255)               | NO   | PRI |                   |                             |
| cl_sortkey        | varbinary(230)               | NO   |     |                   |                             |
| cl_sortkey_prefix | varbinary(255)               | NO   |     |                   |                             |
| cl_timestamp      | timestamp                    | NO   |     | CURRENT_TIMESTAMP | on update CURRENT_TIMESTAMP |
| cl_collation      | varbinary(32)                | NO   | MUL |                   |                             |
| cl_type           | enum('page','subcat','file') | NO   |     | page              |                             |
+-------------------+------------------------------+------+-----+-------------------+-----------------------------+
  Uwaga: Starting with version 1.17, the index on (cl_to, cl_sortkey) is no more, and replaced with one on (cl_to, cl_type, cl_sortkey, cl_from). Extensions that directly query the categorylinks table to get a list of pages in sorted order need to make sure they are using the new index, or the query may become very inefficient
Wersje MediaWiki:
1.10 – 1.16

DESCRIBE categorylinks;

+--------------+------------------+------+-----+-------------------+-----------------------------+
| Field        | Type             | Null | Key | Default           | Extra                       |
+--------------+------------------+------+-----+-------------------+-----------------------------+
| cl_from      | int(10) unsigned | NO   | PRI | 0                 |                             |
| cl_to        | varbinary(255)   | NO   | PRI |                   |                             |
| cl_sortkey   | varbinary(70)    | NO   |     |                   |                             |
| cl_timestamp | timestamp        | NO   |     | CURRENT_TIMESTAMP | on update CURRENT_TIMESTAMP |
+--------------+------------------+------+-----+-------------------+-----------------------------+
Wersje MediaWiki:
1.5 – 1.9

DESCRIBE categorylinks;

+--------------+-----------------+------+-----+-------------------+-----------------------------+
| Field        | Type            | Null | Key | Default           | Extra                       |
+--------------+-----------------+------+-----+-------------------+-----------------------------+
| cl_from      | int(8) unsigned | NO   | PRI | 0                 |                             |
| cl_to        | varchar(255)    | NO   | PRI |                   |                             |
| cl_sortkey   | varchar(86)     | NO   |     |                   |                             |
| cl_timestamp | timestamp       | NO   |     | CURRENT_TIMESTAMP | on update CURRENT_TIMESTAMP |
+--------------+-----------------+------+-----+-------------------+-----------------------------+
Wersje MediaWiki:
1.3 – 1.4

DESCRIBE categorylinks;

+--------------+-----------------+------+-----+-------------------+-----------------------------+
| Field        | Type            | Null | Key | Default           | Extra                       |
+--------------+-----------------+------+-----+-------------------+-----------------------------+
| cl_from      | int(8) unsigned | NO   | PRI | 0                 |                             |
| cl_to        | varchar(255)    | NO   | PRI |                   |                             |
| cl_sortkey   | varchar(255)    | NO   |     |                   |                             |
| cl_timestamp | timestamp       | NO   |     | CURRENT_TIMESTAMP | on update CURRENT_TIMESTAMP |
+--------------+-----------------+------+-----+-------------------+-----------------------------+

Indeksy

Wersja MediaWiki:
1.42

SHOW INDEX IN categorylinks;

+---------------+------------+--------------+--------------+--------------+-----------+-------------+----------+--------+------+------------+---------+---------------+
| Table         | Non_unique | Key_name     | Seq_in_index | Column_name  | Collation | Cardinality | Sub_part | Packed | Null | Index_type | Comment | Index_comment |
+---------------+------------+--------------+--------------+--------------+-----------+-------------+----------+--------+------+------------+---------+---------------+
| categorylinks |          0 | PRIMARY      |            1 | cl_from      | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |
| categorylinks |          0 | PRIMARY      |            2 | cl_to        | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |
| categorylinks |          1 | cl_sortkey   |            1 | cl_to        | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |
| categorylinks |          1 | cl_sortkey   |            2 | cl_type      | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |
| categorylinks |          1 | cl_sortkey   |            3 | cl_sortkey   | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |
| categorylinks |          1 | cl_sortkey   |            4 | cl_from      | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |
| categorylinks |          1 | cl_timestamp |            1 | cl_to        | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |
| categorylinks |          1 | cl_timestamp |            2 | cl_timestamp | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |
+---------------+------------+--------------+--------------+--------------+-----------+-------------+----------+--------+------+------------+---------+---------------+

Zobacz też