+--
+-- patch-recentchanges-drop-rc_comment.sql
+--
+-- T166732. Drop old xx_comment fields, and defaults from xx_comment_id fields.
+
+BEGIN;
+
+DROP TABLE IF EXISTS /*_*/recentchanges_tmp;
+CREATE TABLE /*_*/recentchanges_tmp (
+ rc_id int NOT NULL PRIMARY KEY AUTO_INCREMENT,
+ rc_timestamp varbinary(14) NOT NULL default '',
+ rc_user int unsigned NOT NULL default 0,
+ rc_user_text varchar(255) binary NOT NULL DEFAULT '',
+ rc_actor bigint unsigned NOT NULL DEFAULT 0,
+ rc_namespace int NOT NULL default 0,
+ rc_title varchar(255) binary NOT NULL default '',
+ rc_comment_id bigint unsigned NOT NULL,
+ rc_minor tinyint unsigned NOT NULL default 0,
+ rc_bot tinyint unsigned NOT NULL default 0,
+ rc_new tinyint unsigned NOT NULL default 0,
+ rc_cur_id int unsigned NOT NULL default 0,
+ rc_this_oldid int unsigned NOT NULL default 0,
+ rc_last_oldid int unsigned NOT NULL default 0,
+ rc_type tinyint unsigned NOT NULL default 0,
+ rc_source varchar(16) binary not null default '',
+ rc_patrolled tinyint unsigned NOT NULL default 0,
+ rc_ip varbinary(40) NOT NULL default '',
+ rc_old_len int,
+ rc_new_len int,
+ rc_deleted tinyint unsigned NOT NULL default 0,
+ rc_logid int unsigned NOT NULL default 0,
+ rc_log_type varbinary(255) NULL default NULL,
+ rc_log_action varbinary(255) NULL default NULL,
+ rc_params blob NULL
+) /*$wgDBTableOptions*/;
+
+INSERT OR IGNORE INTO /*_*/recentchanges_tmp (
+ rc_id, rc_timestamp, rc_user, rc_user_text, rc_actor, rc_namespace, rc_title,
+ rc_comment_id, rc_minor, rc_bot, rc_new, rc_cur_id, rc_this_oldid, rc_last_oldid,
+ rc_type, rc_source, rc_patrolled, rc_ip, rc_old_len, rc_new_len, rc_deleted,
+ rc_logid, rc_log_type, rc_log_action, rc_params
+ ) SELECT
+ rc_id, rc_timestamp, rc_user, rc_user_text, rc_actor, rc_namespace, rc_title,
+ rc_comment_id, rc_minor, rc_bot, rc_new, rc_cur_id, rc_this_oldid, rc_last_oldid,
+ rc_type, rc_source, rc_patrolled, rc_ip, rc_old_len, rc_new_len, rc_deleted,
+ rc_logid, rc_log_type, rc_log_action, rc_params
+ FROM /*_*/recentchanges;
+
+DROP TABLE /*_*/recentchanges;
+ALTER TABLE /*_*/recentchanges_tmp RENAME TO /*_*/recentchanges;
+CREATE INDEX /*i*/rc_timestamp ON /*_*/recentchanges (rc_timestamp);
+CREATE INDEX /*i*/rc_namespace_title_timestamp ON /*_*/recentchanges (rc_namespace, rc_title, rc_timestamp);
+CREATE INDEX /*i*/rc_cur_id ON /*_*/recentchanges (rc_cur_id);
+CREATE INDEX /*i*/new_name_timestamp ON /*_*/recentchanges (rc_new,rc_namespace,rc_timestamp);
+CREATE INDEX /*i*/rc_ip ON /*_*/recentchanges (rc_ip);
+CREATE INDEX /*i*/rc_ns_usertext ON /*_*/recentchanges (rc_namespace, rc_user_text);
+CREATE INDEX /*i*/rc_ns_actor ON /*_*/recentchanges (rc_namespace, rc_actor);
+CREATE INDEX /*i*/rc_user_text ON /*_*/recentchanges (rc_user_text, rc_timestamp);
+CREATE INDEX /*i*/rc_actor ON /*_*/recentchanges (rc_actor, rc_timestamp);
+CREATE INDEX /*i*/rc_name_type_patrolled_timestamp ON /*_*/recentchanges (rc_namespace, rc_type, rc_patrolled, rc_timestamp);
+CREATE INDEX /*i*/rc_this_oldid ON /*_*/recentchanges (rc_this_oldid);
+
+COMMIT;