Manual talk:Revision table

Trying to understand how some of the tables relate (Page,Archive,Revision,Text)... Is a current page's content also stored in the text table ? even though the field prefix is old_ ?

Yes, the content (current and past) is stored in text table. "Field names are a holdover from the 'old' revisions table in MediaWiki 1.4 and earlier" (tables.sql).

Problem with import wiki to MySQL
I have a dump of Simple Wikipedia of 9.9.2007 and MediaWiki version 1.11. Table revision in Simple WP has 9 fields, in MediaWiki - 11 fields.

So, when I have tried upload, I have got an error:
 * mysql> source /simple20070909/revision.sql
 * ERROR 1136 (21S01): Column count doesn't match value count at row 1

Remove two fields, source..., then add them back:
 * ''mysql> ALTER TABLE revision DROP COLUMN rev_len, DROP COLUMN rev_parent_id;
 * mysql> source /simple20070909/revision.sql
 * mysql> ALTER TABLE revision ADD COLUMN rev_len INT(10) UNSIGNED DEFAULT NULL AFTER rev_deleted, ADD COLUMN rev_parent_id INT(10) UNSIGNED DEFAULT NULL AFTER rev_len;

If two fields were not added, then MediaWiki generates an error: --AKA MBG 11:48, 11 September 2007 (UTC)
 * from within function "Revision::fetchRow". MySQL returned error "1054: Unknown column 'rev_len' in 'field list' (localhost)".

Hostnames
There's an old discussion here: m:Talk:Privacy_policy/Archives/2003. Apparently they were still shown on some Wiipedias in 2003. --Nemo 10:58, 18 August 2010 (UTC)

rev_sha1
Hi! I updated my wiki, but it doesn't show the actually pagecontent. As I've seen in the database, I recognized that the sha1-row isn't filled in in the newer revisions. How can I fill the rows? Sorry for my english. Arc96 (talk) 15:26, 7 July 2012 (UTC)
 * Hello, there's a maintenance script for it. It's not listed in the page yet but the name is quite descriptive, populate .php. Nemo 21:50, 10 July 2012 (UTC)

Indices
Is this style okay, or do we need to use a wikitable? E.g.:

The "show index in revision" format is easier to maintain, but doesn't tell you on one row what fields pertain to an index. Leucosticte (talk) 20:53, 4 November 2012 (UTC)

Manual:Revision_table
Would someone care to provide more info about the possible values of rev_deleted? Leucosticte (talk) 10:03, 13 December 2013 (UTC)
 * "0" is set for basically every row and obviously stands for "not deleted". So my first guess would have been that possible values would be this "0" and "1" for "deleted". However, in that case it would have been enough to define the column as BIT or as TINYINT(1), but it in fact is defined as TINYINT(3), which makes me unsure, whether my thoughts are correct and whether "deleted"/"not deleted" is all to be set there... --88.130.92.144 04:46, 22 February 2014 (UTC)
 * I should state that I'm no expert in the MediaWiki code, but I believe these few lines from Revision.php give us our answer:
 * – RobinHood70 talk 05:31, 23 February 2014 (UTC)
 * I experimented a bit and found this is indeed how it works. E.g., I revisiondeleted the comment, and it changed from 0 to 2; then I revisiondeleted the user as well, and it changed to 6. Leucosticte (talk) 07:38, 23 February 2014 (UTC)
 * I experimented a bit and found this is indeed how it works. E.g., I revisiondeleted the comment, and it changed from 0 to 2; then I revisiondeleted the user as well, and it changed to 6. Leucosticte (talk) 07:38, 23 February 2014 (UTC)

Page creation
Is there any way of checking if a rev was a page creation? πr2 (t • c) 16:09, 24 February 2014 (UTC)
 * rev_parent_id=0 ? πr2 (t • c) 16:15, 24 February 2014 (UTC)