Manual:ip_changes table
From Linux Web Expert
| ↑ Manual:Contents | <translate> MediaWiki database layout</translate> | <translate> <tvar name=1>ip_changes</tvar> table</translate> |
<translate> ≥</translate> 1.30
| <translate> MediaWiki version:</translate> |
Every time an edit by a logged out user is saved, a row is created in the ip_changes table. This stores the IP as a hex representation so that we can more easily find edits within an IP range. One of the primary purposes of the table is to support IP range queries at Special:Contributions. This table was introduced in Gerrit change 370946.
Fields
ipc_rev_id
Foreign key to the revision table, also serves as the unique primary key.
ipc_rev_timestamp
The timestamp of the revision.
ipc_hex
Hex representation of the IP address, as returned by IP::toHex().
BETWEEN is then used to identify revisions within a given range.
Schema summary
<td class="mw-version-versionbox" title="<translate nowrap> The latest stable version is <tvar name=1>1.41</tvar></translate>"><translate> ≥</translate> 1.36
| <translate> MediaWiki version:</translate> |
DESCRIBE ip_changes;
+-------------------+------------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +-------------------+------------------+------+-----+---------+-------+ | ipc_rev_id | int(10) unsigned | NO | PRI | 0 | | | ipc_rev_timestamp | binary(14) | NO | MUL | NULL | | | ipc_hex | varbinary(35) | NO | MUL | | | +-------------------+------------------+------+-----+---------+-------+<td class="mw-version-versionbox" title="<translate nowrap> MediaWiki <tvar name=1>1.35</tvar> is unsupported version</translate>">
1.30 – 1.35
| <translate> MediaWiki versions:</translate> |
DESCRIBE ip_changes;
+-------------------+------------------+------+-----+----------------+-------+ | Field | Type | Null | Key | Default | Extra | +-------------------+------------------+------+-----+----------------+-------+ | ipc_rev_id | int(10) unsigned | NO | PRI | 0 | | | ipc_rev_timestamp | binary(14) | NO | MUL | | | | ipc_hex | varbinary(35) | NO | MUL | | | +-------------------+------------------+------+-----+----------------+-------+
Indexes
<td class="mw-version-versionbox" title="<translate nowrap> The latest stable version is <tvar name=1>1.41</tvar></translate>"><translate> ≥</translate> 1.30
| <translate> MediaWiki version:</translate> |
SHOW INDEX IN ip_changes;
+------------+------------+-------------------+--------------+-------------------+-----------+-------------+----------+--------+------+------------+---------+---------------+ | Table | Non_unique | Key_name | Seq_in_index | Column_name | Collation | Cardinality | Sub_part | Packed | Null | Index_type | Comment | Index_comment | +------------+------------+-------------------+--------------+-------------------+-----------+-------------+----------+--------+------+------------+---------+---------------+ | ip_changes | 0 | PRIMARY | 1 | ipc_rev_id | A | 0 | NULL | NULL | | BTREE | | | | ip_changes | 1 | ipc_rev_timestamp | 1 | ipc_rev_timestamp | A | 0 | NULL | NULL | | BTREE | | | | ip_changes | 1 | ipc_hex_time | 1 | ipc_hex | A | 0 | NULL | NULL | | BTREE | | | | ip_changes | 1 | ipc_hex_time | 2 | ipc_rev_timestamp | A | 0 | NULL | NULL | | BTREE | | | +------------+------------+-------------------+--------------+-------------------+-----------+-------------+----------+--------+------+------------+---------+---------------+
