Manual:Blobs table

MediaWiki database layout

blobs table

The blobs table stores the contents of the text table. This table only exists if the wiki is configured to have External Storage , usually on a separate database than the other tables of the wiki.

Before MediaWiki 1.5, this table had an undocumented usage, but since MediaWiki 1.5 this table is no longer used for its original purpose.

Schema summary

MediaWiki version:

≥ 1.10

+-----------+------------------+------+-----+---------+----------------+
| Field     | Type             | Null | Key | Default | Extra          |
+-----------+------------------+------+-----+---------+----------------+
| blob_id   | int(10) unsigned | NO   | PRI | NULL    | auto_increment |
| blob_text | longblob         | YES  |     | NULL    |                |
+-----------+------------------+------+-----+---------+----------------+

MediaWiki versions:

1.6 – 1.9

+-----------+------------+------+-----+---------+----------------+
| Field     | Type       | Null | Key | Default | Extra          |
+-----------+------------+------+-----+---------+----------------+
| blob_id   | int(8)     | NO   | PRI | NULL    | auto_increment |
| blob_text | mediumtext | YES  |     | NULL    |                |
+-----------+------------+------+-----+---------+----------------+

MediaWiki versions:

1.3 – 1.4

+------------+-----------+------+-----+---------+-------+
| Field      | Type      | Null | Key | Default | Extra |
+------------+-----------+------+-----+---------+-------+
| blob_index | char(255) | NO   | PRI |         |       |
| blob_data  | longblob  | NO   |     | NULL    |       |
+------------+-----------+------+-----+---------+-------+