Extension:LiquidThreads/thread table

mysql> describe thread; +--+--+--+-+++ +--+--+--+-+++ +--+--+--+-+++
 * Field                   | Type             | Null | Key | Default        | Extra          |
 * thread_id               | int(8) unsigned  | NO   | PRI | NULL           | auto_increment |
 * thread_root             | int(8) unsigned  | NO   | UNI | NULL           |                |
 * thread_ancestor         | int(8) unsigned  | NO   | MUL | NULL           |                |
 * thread_parent           | int(8) unsigned  | YES  | MUL | NULL           |                |
 * thread_summary_page     | int(8) unsigned  | YES  | MUL | NULL           |                |
 * thread_subject          | varbinary(255)   | YES  |     | NULL           |                |
 * thread_author_id        | int(10) unsigned | YES  | MUL | NULL           |                |
 * thread_author_name      | varbinary(255)   | YES  |     | NULL           |                |
 * thread_modified         | binary(14)       | NO   | MUL |                |                |
 * thread_created          | binary(14)       | NO   | MUL |                |                |
 * thread_editedness       | int(1)           | NO   |     | 0              |                |
 * thread_article_namespace | int(11)         | NO   | MUL | NULL           |                |
 * thread_article_title    | varbinary(255)   | NO   |     | NULL           |                |
 * thread_article_id       | int(8) unsigned  | NO   | MUL | NULL           |                |
 * thread_type             | int(4) unsigned  | NO   |     | 0              |                |
 * thread_sortkey          | varbinary(255)   | NO   | MUL |                |                |
 * thread_replies          | int(8)           | YES  |     | -1             |                |
 * thread_signature        | tinyblob         | YES  |     | NULL           |                |