database_changelog.txt

Any time you make a change to the schema files, remember to increment the database schema version. Generally increment the minor number, major should be reserved for significant changes to the schema. Both values go up to 255.

The latest database version is 7.7; The query to update the schema revision table is:

INSERT INTO `schema_revision` (`major`, `minor`) VALUES (7, 7);
or
INSERT INTO `SS13_schema_revision` (`major`, `minor`) VALUES (7, 7);

In any query remember to add a prefix to the table names if you use one.

-----------------------------------------------------
Version 7.7, 1 April 2026, by boneyards
Adds Moth Eyes preference column

ALTER TABLE `SS13_characters`
	ADD COLUMN IF NOT EXISTS `feature_moth_eyes` VARCHAR(64) COLLATE 'utf8mb4_general_ci' AFTER `feature_moth_wings`;

-----------------------------------------------------

-----------------------------------------------------
Version 7.6, 29 June 2025, by Pinksuzuki
Adds Quirk Accent options

ALTER TABLE `SS13_characters`
	ADD COLUMN IF NOT EXISTS `quirk_accent` VARCHAR(64) COLLATE 'utf8mb4_general_ci' AFTER `quirk_alcohol_type`

-----------------------------------------------------

-----------------------------------------------------
Version 7.5, 29 June 2025, by itsmeow
Adds External Session Creation Nonces

CREATE TABLE IF NOT EXISTS `SS13_session_creation_nonce` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `created` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
  `ip` varchar(32) NOT NULL,
  `seeker_port` SMALLINT UNSIGNED DEFAULT NULL,
  `session_nonce` varchar(64) NOT NULL UNIQUE,
  PRIMARY KEY (`id`),
  UNIQUE INDEX `ip_nonce` (`ip`, `session_nonce`) USING BTREE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

-----------------------------------------------------

-----------------------------------------------------
Version 7.4, 23 June 2025, by itsmeow
External Discord ID authentication

IMPORTANT: Before running external auth on production, it is highly recommended to import any known `discord_uid` value to the production SS13_player table.
This allows users the opportunity to use their existing player data.

ALTER TABLE `SS13_player`
	ADD COLUMN IF NOT EXISTS `discord_uid` varchar(32) DEFAULT NULL AFTER `byond_key`;

CREATE TABLE IF NOT EXISTS `SS13_session` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `ip` int(10) unsigned NOT NULL,
  `session_token` varchar(64) NOT NULL UNIQUE,
  `external_method` varchar(16) NOT NULL,
  `external_uid` varchar(32) NOT NULL,
  `external_display_name` varchar(32) NOT NULL,
  `valid_until` datetime NOT NULL,
  PRIMARY KEY (`id`),
  UNIQUE INDEX `ip_token` (`ip`, `session_token`) USING BTREE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

-----------------------------------------------------

-----------------------------------------------------
Version 7.3, 30 April 2024, by XeonMations
Dionae - Species Addition

ALTER TABLE `SS13_characters`
	ADD COLUMN IF NOT EXISTS `feature_diona_leaves` VARCHAR(64) COLLATE 'utf8mb4_general_ci' AFTER `feature_psyphoza_cap`,
	ADD COLUMN IF NOT EXISTS `feature_diona_thorns` VARCHAR(64) COLLATE 'utf8mb4_general_ci' AFTER `feature_diona_leaves`,
	ADD COLUMN IF NOT EXISTS `feature_diona_flowers` VARCHAR(64) COLLATE 'utf8mb4_general_ci' AFTER `feature_diona_thorns`,
	ADD COLUMN IF NOT EXISTS `feature_diona_moss` VARCHAR(64) COLLATE 'utf8mb4_general_ci' AFTER `feature_diona_flowers`,
	ADD COLUMN IF NOT EXISTS `feature_diona_mushroom` VARCHAR(64) COLLATE 'utf8mb4_general_ci' AFTER `feature_diona_moss`,
	ADD COLUMN IF NOT EXISTS `feature_diona_antennae` VARCHAR(64) COLLATE 'utf8mb4_general_ci' AFTER `feature_diona_mushroom`,
	ADD COLUMN IF NOT EXISTS `feature_diona_eyes` VARCHAR(64) COLLATE 'utf8mb4_general_ci' AFTER `feature_diona_antennae`,
	ADD COLUMN IF NOT EXISTS `feature_diona_pbody` VARCHAR(64) COLLATE 'utf8mb4_general_ci' AFTER `feature_diona_eyes`;

-----------------------------------------------------

Version 7.2, 20 December 2023, by that0neperson and Absolucy
Added customization for quirks.

ALTER TABLE `SS13_characters`
	ADD COLUMN IF NOT EXISTS `quirk_prosthetic_limb_location` VARCHAR(64) COLLATE 'utf8mb4_general_ci' AFTER `all_quirks`,
	ADD COLUMN IF NOT EXISTS `quirk_phobia` VARCHAR(64) COLLATE 'utf8mb4_general_ci' AFTER `quirk_prosthetic_limb_location`,
	ADD COLUMN IF NOT EXISTS `quirk_multilingual_language` VARCHAR(64) COLLATE 'utf8mb4_general_ci' AFTER `quirk_phobia`,
	ADD COLUMN IF NOT EXISTS `quirk_smoker_cigarettes` VARCHAR(64) COLLATE 'utf8mb4_general_ci' AFTER `quirk_multilingual_language` ,
	ADD COLUMN IF NOT EXISTS `quirk_junkie_drug` VARCHAR(64) COLLATE 'utf8mb4_general_ci' AFTER `quirk_smoker_cigarettes`,
	ADD COLUMN IF NOT EXISTS `quirk_alcohol_type` VARCHAR(64) COLLATE 'utf8mb4_general_ci' AFTER `quirk_junkie_drug`;

-----------------------------------------------------

-----------------------------------------------------

Version 7.1, 4 December 2023, by DrDuckedGoose
Psyphoza - Species Addition

ALTER TABLE `SS13_characters` ADD COLUMN IF NOT EXISTS `feature_psyphoza_cap` VARCHAR(64) COLLATE 'utf8mb4_general_ci' AFTER `feature_human_ears`;

-----------------------------------------------------

-----------------------------------------------------

Version 7.0, 24 July 2023, by itsmeow
Datumized preferences (TGUI Prefs)

See prefs_migration_2023-07-26.sql

-----------------------------------------------------

-----------------------------------------------------

Version 6.2 - 16 June 2023 by itsmeow
Add per-character role preferences.

ALTER TABLE `SS13_characters` ADD COLUMN IF NOT EXISTS `role_preferences` MEDIUMTEXT NOT NULL COLLATE 'utf8mb4_general_ci' AFTER `equipped_gear`;
UPDATE `SS13_characters` SET `role_preferences` = '[]' WHERE `role_preferences` = '';

-----------------------------------------------------

-----------------------------------------------------

Version 6.1-ADMINALERT - 9 May 2023 by CydiaLamiales - Minor update, enable admin alert pref for existing users

UPDATE SS13_preferences SET preference_value = preference_value | (1<<20) WHERE preference_tag = 2;

-----------------------------------------------------

-----------------------------------------------------

Version 6.1-TGUISAY - 16 March 2023 by itsmeow - Minor update, enable TGUI Say preferences for existing users

UPDATE SS13_preferences SET preference_value = preference_value | (1<<14) | (1<<15) | (1<<16) | (1<<17) WHERE preference_tag = 2;

-----------------------------------------------------

-----------------------------------------------------

Version 6.1-SOUNDTRACK - 11 March 2023 by itsmeow - Minor update, enable soundtrack pref for existing users

UPDATE SS13_preferences SET preference_value = preference_value | (1<<13) WHERE preference_tag = 2;

-----------------------------------------------------

Version 6.1, 29 December 2020, by Missfox, ported 20 August 2022 by ivanmixo
Modified table `messages`, adding column `playtime` to show the user's playtime when the note was created.

ALTER TABLE `messages` ADD `playtime` INT(11) UNSIGNED NULL DEFAULT(NULL) AFTER `severity`

-----------------------------------------------------

-----------------------------------------------------
Version 6.0, 23 August 2022 by AffectedArc07

Fully refactors the preferences system. You will want to run tools/preferences_importer

# 1. Clear out old tables

DROP TABLE IF EXISTS `SS13_characters`;
DROP TABLE IF EXISTS `SS13_preferences`;

# 2. Make new ones
CREATE TABLE IF NOT EXISTS `SS13_characters` (
	`slot` INT(11) UNSIGNED NOT NULL,
	`ckey` VARCHAR(64) NOT NULL COLLATE 'utf8mb4_general_ci',
	`species` VARCHAR(32) NOT NULL COLLATE 'utf8mb4_general_ci',
	`real_name` VARCHAR(64) NOT NULL COLLATE 'utf8mb4_general_ci',
	`name_is_always_random` TINYINT(1) NOT NULL,
	`body_is_always_random` TINYINT(1) NOT NULL,
	`gender` VARCHAR(16) NOT NULL COLLATE 'utf8mb4_general_ci',
	`age` TINYINT(3) UNSIGNED NOT NULL,
	`hair_color` VARCHAR(8) NOT NULL COLLATE 'utf8mb4_general_ci',
	`gradient_color` VARCHAR(8) NOT NULL COLLATE 'utf8mb4_general_ci',
	`facial_hair_color` VARCHAR(8) NOT NULL COLLATE 'utf8mb4_general_ci',
	`eye_color` VARCHAR(8) NOT NULL COLLATE 'utf8mb4_general_ci',
	`skin_tone` VARCHAR(64) NOT NULL COLLATE 'utf8mb4_general_ci',
	`hair_style_name` VARCHAR(64) NOT NULL COLLATE 'utf8mb4_general_ci',
	`gradient_style` VARCHAR(64) NOT NULL COLLATE 'utf8mb4_general_ci',
	`facial_style_name` VARCHAR(64) NOT NULL COLLATE 'utf8mb4_general_ci',
	`underwear` VARCHAR(64) NOT NULL COLLATE 'utf8mb4_general_ci',
	`underwear_color` VARCHAR(32) NOT NULL COLLATE 'utf8mb4_general_ci',
	`undershirt` VARCHAR(64) NOT NULL COLLATE 'utf8mb4_general_ci',
	`socks` VARCHAR(64) NOT NULL COLLATE 'utf8mb4_general_ci',
	`backbag` VARCHAR(64) NOT NULL COLLATE 'utf8mb4_general_ci',
	`jumpsuit_style` VARCHAR(64) NOT NULL COLLATE 'utf8mb4_general_ci',
	`uplink_loc` VARCHAR(64) NOT NULL COLLATE 'utf8mb4_general_ci',
	`features` MEDIUMTEXT NOT NULL COLLATE 'utf8mb4_general_ci',
	`custom_names` MEDIUMTEXT NOT NULL COLLATE 'utf8mb4_general_ci',
	`helmet_style` VARCHAR(64) NOT NULL COLLATE 'utf8mb4_general_ci',
	`preferred_ai_core_display` VARCHAR(64) NOT NULL COLLATE 'utf8mb4_general_ci',
	`preferred_security_department` VARCHAR(32) NOT NULL COLLATE 'utf8mb4_general_ci',
	`joblessrole` TINYINT(4) UNSIGNED NOT NULL,
	`job_preferences` MEDIUMTEXT NOT NULL COLLATE 'utf8mb4_general_ci',
	`all_quirks` MEDIUMTEXT NOT NULL COLLATE 'utf8mb4_general_ci',
	`equipped_gear` MEDIUMTEXT NOT NULL COLLATE 'utf8mb4_general_ci',
	PRIMARY KEY (`slot`, `ckey`) USING BTREE
) COLLATE='utf8mb4_general_ci' ENGINE=InnoDB;

CREATE TABLE `SS13_preferences` (
	`ckey` VARCHAR(64) NOT NULL COLLATE 'utf8mb4_general_ci',
	`preference_tag` INT(11) NOT NULL,
	`preference_value` MEDIUMTEXT NULL COLLATE 'utf8mb4_general_ci',
	UNIQUE INDEX `prefbinding` (`ckey`, `preference_tag`) USING BTREE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

-----------------------------------------------------
Version 5.10, 28 December 2020 by Crossedfall
Added the server_name column to the feedback table

ALTER TABLE `ss13_feedback`
	ADD COLUMN IF NOT EXISTS `server_name` varchar(32) DEFAULT NULL AFTER `round_id`;

-----------------------------------------------------

Version 5.9, 5 October 2019 by Anturke, ported 1 October 2021 by Ivniinvi
Added achievements table.
See hub migration verb in _achievement_data.dm for details on migrating.

DROP TABLE IF EXISTS `achievements`;
CREATE TABLE `achievements` (
	`ckey` VARCHAR(32) NOT NULL,
	`achievement_key` VARCHAR(32) NOT NULL,
	`value` INT NULL,
	`last_updated` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
	PRIMARY KEY (`ckey`,`achievement_key`)
) ENGINE=InnoDB;

Added achievement_metadata table.

DROP TABLE IF EXISTS `achievement_metadata`;
CREATE TABLE `achievement_metadata` (
	`achievement_key` VARCHAR(32) NOT NULL,
	`achievement_version` SMALLINT UNSIGNED NOT NULL DEFAULT 0,
	`achievement_type` enum('achievement','score','award') NULL DEFAULT NULL,
	`achievement_name` VARCHAR(64) NULL DEFAULT NULL,
	`achievement_description` VARCHAR(512) NULL DEFAULT NULL,
	PRIMARY KEY (`achievement_key`)
) ENGINE=InnoDB;

-----------------------------------------------------

Version 5.8 28 September 2021, by Raven-Industries and MCterra
Updates the maximum length for book titles in the library.

ALTER TABLE `SS13_library`
	CHANGE COLUMN `title` `title` VARCHAR(50) NOT NULL AFTER `author`;

-----------------------------------------------------

Version 5.7 20 July 2020, by ike709
Adds a new `uuid` column in the `player` table that allows for discord verification.

ALTER TABLE SS13_player
ADD COLUMN `uuid` VARCHAR(64) DEFAULT NULL AFTER `computerid`,
ADD CONSTRAINT `UUID` UNIQUE KEY (`uuid`)

----------------------------------------------------

Version 5.6, 13 June 2020, by Jordie0608
Updates and improvements to poll handling.
Added the `deleted` column to tables 'poll_option', 'poll_textreply' and 'poll_vote' and the columns `created_datetime`, `subtitle`, `allow_revoting` and `deleted` to 'poll_question'.
Changes table 'poll_question' column `createdby_ckey` to be NOT NULL and index `idx_pquest_time_admin` to be `idx_pquest_time_deleted_id` and 'poll_textreply' column `adminrank` to have no default.
Added procedure `set_poll_deleted` that's called when deleting a poll to set deleted to true on each poll table where rows matching a poll_id argument.

ALTER TABLE `poll_option`
	ADD COLUMN `deleted` TINYINT(1) UNSIGNED NOT NULL DEFAULT '0' AFTER `default_percentage_calc`;

ALTER TABLE `poll_question`
	CHANGE COLUMN `createdby_ckey` `createdby_ckey` VARCHAR(32) NOT NULL AFTER `multiplechoiceoptions`,
	ADD COLUMN `created_datetime` datetime NOT NULL AFTER `polltype`,
	ADD COLUMN `subtitle` VARCHAR(255) NULL DEFAULT NULL AFTER `question`,
	ADD COLUMN `allow_revoting` TINYINT(1) UNSIGNED NOT NULL AFTER `dontshow`,
	ADD COLUMN `deleted` TINYINT(1) UNSIGNED NOT NULL DEFAULT '0' AFTER `allow_revoting`,
	DROP INDEX `idx_pquest_time_admin`,
	ADD INDEX `idx_pquest_time_deleted_id` (`starttime`, `endtime`, `deleted`, `id`);

ALTER TABLE `poll_textreply`
	CHANGE COLUMN `adminrank` `adminrank` varchar(32) NOT NULL AFTER `replytext`,
	ADD COLUMN `deleted` TINYINT(1) UNSIGNED NOT NULL DEFAULT '0' AFTER `adminrank`;

ALTER TABLE `poll_vote`
	ADD COLUMN `deleted` TINYINT(1) UNSIGNED NOT NULL DEFAULT '0' AFTER `rating`;

DELIMITER $$
CREATE PROCEDURE `set_poll_deleted`(
	IN `poll_id` INT
)
SQL SECURITY INVOKER
BEGIN
UPDATE `poll_question` SET deleted = 1 WHERE id = poll_id;
UPDATE `poll_option` SET deleted = 1 WHERE pollid = poll_id;
UPDATE `poll_vote` SET deleted = 1 WHERE pollid = poll_id;
UPDATE `poll_textreply` SET deleted = 1 WHERE pollid = poll_id;
END
$$
DELIMITER ;

-----------------------------------------------------

Version 5.5 21 May 2020, by Crossedfall
Adds a new `hidden` column in the `ban` table that allows for server maintainers to hide specific ban entries if needed (e.g. in cases where the GDPR is invoked)

ALTER TABLE `ban`
ADD `hidden` tinyint(1) unsigned NOT NULL DEFAULT '0';

----------------------------------------------------
Version 5.4 2 Jan 2020, by ike709
Adds the ability to specify a minimum playtime requirement (in hours) to vote in a server poll.

ALTER TABLE `poll_question`
ADD `minimumplaytime` int(4) NOT NULL;

----------------------------------------------------
Version 5.3 4 Oct 2019, by Crossedfall
Adds the ability to apply bans globally or locally when multiple servers are used using the new `global_ban` column in the `ban` table.

ALTER TABLE `ban`
ADD `global_ban` tinyint(1) unsigned NOT NULL DEFAULT '1';

----------------------------------------------------
Version 5.2, 22 Sep 2019, by Crossedfall & Qwerty
Added the `server_name` column to the ban, connection_log, death, legacy_population, and round tables containing the server's name pulled from the `serversqlname` config variable. Updated the `server` column in the messages table to match the standard naming convention (`server_name`).

ALTER TABLE `ban`
ADD `server_name` varchar(32) DEFAULT NULL;

ALTER TABLE `connection_log`
ADD `server_name` varchar(32) DEFAULT NULL;

ALTER TABLE `death`
ADD `server_name` varchar(32) DEFAULT NULL;

ALTER TABLE `legacy_population`
ADD `server_name` varchar(32) DEFAULT NULL;

ALTER TABLE `round`
ADD `server_name` varchar(32) DEFAULT NULL;

ALTER TABLE `messages`
CHANGE `server` `server_name` varchar(32);

----------------------------------------------------


Version 5.1, 25 Feb 2018, by MrStonedOne
Added four tables to enable storing of stickybans in the database since byond can lose them, and to enable disabling stickybans for a round without depending on a crash free round. Existing stickybans are automagically imported to the tables.

CREATE TABLE `stickyban` (
	`ckey` VARCHAR(32) NOT NULL,
	`reason` VARCHAR(2048) NOT NULL,
	`banning_admin` VARCHAR(32) NOT NULL,
	`datetime` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
	PRIMARY KEY (`ckey`)
) ENGINE=InnoDB;

CREATE TABLE `stickyban_matched_ckey` (
	`stickyban` VARCHAR(32) NOT NULL,
	`matched_ckey` VARCHAR(32) NOT NULL,
	`first_matched` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
	`last_matched` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
	`exempt` TINYINT(1) NOT NULL DEFAULT '0',
	PRIMARY KEY (`stickyban`, `matched_ckey`)
) ENGINE=InnoDB;

CREATE TABLE `stickyban_matched_ip` (
	`stickyban` VARCHAR(32) NOT NULL,
	`matched_ip` INT UNSIGNED NOT NULL,
	`first_matched` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
	`last_matched` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
	PRIMARY KEY (`stickyban`, `matched_ip`)
) ENGINE=InnoDB;

CREATE TABLE `stickyban_matched_cid` (
	`stickyban` VARCHAR(32) NOT NULL,
	`matched_cid` VARCHAR(32) NOT NULL,
	`first_matched` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
	`last_matched` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
	PRIMARY KEY (`stickyban`, `matched_cid`)
) ENGINE=InnoDB;

----------------------------------------------------

Version 5.0, 28 October 2018, by Jordie0608
Modified ban table to remove the need for the `bantype` column, a python script is used to migrate data to this new format.

See the file 'ban_conversion_2018-10-28.py' for instructions on how to use the script.

A new ban table can be created with the query:
CREATE TABLE `ban` (
  `id` INT(11) UNSIGNED NOT NULL AUTO_INCREMENT,
  `bantime` DATETIME NOT NULL,
  `server_ip` INT(10) UNSIGNED NOT NULL,
  `server_port` SMALLINT(5) UNSIGNED NOT NULL,
  `round_id` INT(11) UNSIGNED NOT NULL,
  `role` VARCHAR(32) NULL DEFAULT NULL,
  `expiration_time` DATETIME NULL DEFAULT NULL,
  `applies_to_admins` TINYINT(1) UNSIGNED NOT NULL DEFAULT '0',
  `reason` VARCHAR(2048) NOT NULL,
  `ckey` VARCHAR(32) NULL DEFAULT NULL,
  `ip` INT(10) UNSIGNED NULL DEFAULT NULL,
  `computerid` VARCHAR(32) NULL DEFAULT NULL,
  `a_ckey` VARCHAR(32) NOT NULL,
  `a_ip` INT(10) UNSIGNED NOT NULL,
  `a_computerid` VARCHAR(32) NOT NULL,
  `who` VARCHAR(2048) NOT NULL,
  `adminwho` VARCHAR(2048) NOT NULL,
  `edits` TEXT NULL DEFAULT NULL,
  `unbanned_datetime` DATETIME NULL DEFAULT NULL,
  `unbanned_ckey` VARCHAR(32) NULL DEFAULT NULL,
  `unbanned_ip` INT(10) UNSIGNED NULL DEFAULT NULL,
  `unbanned_computerid` VARCHAR(32) NULL DEFAULT NULL,
  `unbanned_round_id` INT(11) UNSIGNED NULL DEFAULT NULL,
  PRIMARY KEY (`id`),
  KEY `idx_ban_isbanned` (`ckey`,`role`,`unbanned_datetime`,`expiration_time`),
  KEY `idx_ban_isbanned_details` (`ckey`,`ip`,`computerid`,`role`,`unbanned_datetime`,`expiration_time`),
  KEY `idx_ban_count` (`bantime`,`a_ckey`,`applies_to_admins`,`unbanned_datetime`,`expiration_time`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

----------------------------------------------------

Version 4.7, 18 August 2018, by CitrusGender
Modified table `messages`, adding column `severity` to classify notes based on their severity.

ALTER TABLE `messages` ADD `severity` enum('high','medium','minor','none') DEFAULT NULL AFTER `expire_timestamp`

----------------------------------------------------

Version 4.6, 11 August 2018, by Jordie0608
Modified table `messages`, adding column `expire_timestamp` to allow for auto-"deleting" messages.

ALTER TABLE `messages` ADD `expire_timestamp` DATETIME NULL DEFAULT NULL AFTER `secret`;

----------------------------------------------------

Version 4.5, 9 July 2018, by Jordie0608
Modified table `player`, adding column `byond_key` to store a user's key along with their ckey.
To populate this new column run the included script 'populate_key_2018-07', see the file for use instructions.

ALTER TABLE `player` ADD `byond_key` VARCHAR(32) DEFAULT NULL AFTER `ckey`;

----------------------------------------------------

Version 4.4, 9 May 2018, by Jordie0608
Modified table `round`, renaming column `start_datetime` to `initialize_datetime` and `end_datetime` to `shutdown_datetime` and adding columns to replace both under the same name in preparation for changes to TGS server initialization.

ALTER TABLE `round`
	ALTER `start_datetime` DROP DEFAULT;
ALTER TABLE `round`
	CHANGE COLUMN `start_datetime` `initialize_datetime` DATETIME NOT NULL AFTER `id`,
	ADD COLUMN `start_datetime` DATETIME NULL DEFAULT NULL AFTER `initialize_datetime`,
	CHANGE COLUMN `end_datetime` `shutdown_datetime` DATETIME NULL DEFAULT NULL AFTER `start_datetime`,
	ADD COLUMN `end_datetime` DATETIME NULL DEFAULT NULL AFTER `shutdown_datetime`;

----------------------------------------------------

Version 4.3, 9 May 2018, by MrStonedOne
Added table `role_time_log` and triggers `role_timeTlogupdate`, `role_timeTloginsert` and `role_timeTlogdelete` to update it from changes to `role_time`

CREATE TABLE `role_time_log` ( `id` BIGINT NOT NULL AUTO_INCREMENT , `ckey` VARCHAR(32) NOT NULL , `job` VARCHAR(128) NOT NULL , `delta` INT NOT NULL , `datetime` TIMESTAMP on update CURRENT_TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP , PRIMARY KEY (`id`), INDEX (`ckey`), INDEX (`job`), INDEX (`datetime`)) ENGINE = InnoDB;

DELIMITER $$
CREATE TRIGGER `role_timeTlogupdate` AFTER UPDATE ON `role_time` FOR EACH ROW BEGIN INSERT into role_time_log (ckey, job, delta) VALUES (NEW.CKEY, NEW.job, NEW.minutes-OLD.minutes);
END
$$
CREATE TRIGGER `role_timeTloginsert` AFTER INSERT ON `role_time` FOR EACH ROW BEGIN INSERT into role_time_log (ckey, job, delta) VALUES (NEW.ckey, NEW.job, NEW.minutes);
END
$$
CREATE TRIGGER `role_timeTlogdelete` AFTER DELETE  ON `role_time` FOR EACH ROW BEGIN INSERT into role_time_log (ckey, job, delta) VALUES (OLD.ckey, OLD.job, 0-OLD.minutes);
END
$$
DELIMITER ;
----------------------------------------------------

Version 4.2, 17 April 2018, by Jordie0608
Modified table 'admin', adding the columns 'round_id' and 'target'
ALTER TABLE `admin_log`
	ADD COLUMN `round_id` INT UNSIGNED NOT NULL AFTER `datetime`,
	ADD COLUMN `target` VARCHAR(32) NOT NULL AFTER `operation`;

----------------------------------------------------

Version 4.1, 3 February 2018, by Jordie0608
Modified tables 'admin', 'admin_log' and 'admin_rank', removing unnecessary columns and adding support for excluding rights flags from admin ranks.
This change was made to enable use of sql-based admin loading.
To import your existing admins and ranks run the included script 'admin_import_2018-02-03.py', see the file for use instructions.
Legacy file-based admin loading is still supported, if you want to continue using it the script doesn't need to be run.

ALTER TABLE `admin`
	CHANGE COLUMN `rank` `rank` VARCHAR(32) NOT NULL AFTER `ckey`,
	DROP COLUMN `id`,
	DROP COLUMN `level`,
	DROP COLUMN `flags`,
	DROP COLUMN `email`,
	DROP PRIMARY KEY,
	ADD PRIMARY KEY (`ckey`);

ALTER TABLE `admin_log`
	CHANGE COLUMN `datetime` `datetime` DATETIME NOT NULL AFTER `id`,
	CHANGE COLUMN `adminckey` `adminckey` VARCHAR(32) NOT NULL AFTER `datetime`,
	CHANGE COLUMN `adminip` `adminip` INT(10) UNSIGNED NOT NULL AFTER `adminckey`,
	ADD COLUMN `operation` ENUM('add admin','remove admin','change admin rank','add rank','remove rank','change rank flags') NOT NULL AFTER `adminip`,
	CHANGE COLUMN `log` `log` VARCHAR(1000) NOT NULL AFTER `operation`;

ALTER TABLE `admin_ranks`
	CHANGE COLUMN `rank` `rank` VARCHAR(32) NOT NULL FIRST,
	CHANGE COLUMN `flags` `flags` SMALLINT UNSIGNED NOT NULL AFTER `rank`,
	ADD COLUMN `exclude_flags` SMALLINT UNSIGNED NOT NULL AFTER `flags`,
	ADD COLUMN `can_edit_flags` SMALLINT(5) UNSIGNED NOT NULL AFTER `exclude_flags`,
	DROP COLUMN `id`,
	DROP PRIMARY KEY,
	ADD PRIMARY KEY (`rank`);

----------------------------------------------------

Version 4.0, 12 November 2017, by Jordie0608
Modified feedback table to use json, a python script is used to migrate data to this new format.

See the file 'feedback_conversion_2017-11-12.py' for instructions on how to use the script.

A new json feedback table can be created with:
CREATE TABLE `feedback` (
  `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
  `datetime` datetime NOT NULL,
  `round_id` int(11) unsigned NOT NULL,
  `key_name` varchar(32) NOT NULL,
  `key_type` enum('text', 'amount', 'tally', 'nested tally', 'associative') NOT NULL,
  `version` tinyint(3) unsigned NOT NULL,
  `json` json NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=MyISAM

----------------------------------------------------

Version 3.4, 28 August 2017, by MrStonedOne
Modified table 'messages', adding a deleted column and editing all indexes to include it

ALTER TABLE `messages`
ADD COLUMN `deleted` tinyint(1) unsigned NOT NULL DEFAULT '0' AFTER `edits`,
DROP INDEX `idx_msg_ckey_time`,
DROP INDEX `idx_msg_type_ckeys_time`,
DROP INDEX `idx_msg_type_ckey_time_odr`,
ADD INDEX `idx_msg_ckey_time` (`targetckey`,`timestamp`, `deleted`),
ADD INDEX `idx_msg_type_ckeys_time` (`type`,`targetckey`,`adminckey`,`timestamp`, `deleted`),
ADD INDEX `idx_msg_type_ckey_time_odr` (`type`,`targetckey`,`timestamp`, `deleted`);

----------------------------------------------------

Version 3.3, 25 August 2017, by Jordie0608

Modified tables 'connection_log', 'legacy_population', 'library', 'messages' and 'player' to add additional 'round_id' tracking in various forms and 'server_ip' and 'server_port' to the table 'messages'.

ALTER TABLE `connection_log` ADD COLUMN `round_id` INT(11) UNSIGNED NOT NULL AFTER `server_port`;
ALTER TABLE `legacy_population` ADD COLUMN `round_id` INT(11) UNSIGNED NOT NULL AFTER `server_port`;
ALTER TABLE `library` ADD COLUMN `round_id_created` INT(11) UNSIGNED NOT NULL AFTER `deleted`;
ALTER TABLE `messages` ADD COLUMN `server_ip` INT(10) UNSIGNED NOT NULL AFTER `server`, ADD COLUMN `server_port` SMALLINT(5) UNSIGNED NOT NULL AFTER `server_ip`, ADD COLUMN `round_id` INT(11) UNSIGNED NOT NULL AFTER `server_port`;
ALTER TABLE `player` ADD COLUMN `firstseen_round_id` INT(11) UNSIGNED NOT NULL AFTER `firstseen`, ADD COLUMN `lastseen_round_id` INT(11) UNSIGNED NOT NULL AFTER `lastseen`;

----------------------------------------------------

Version 3.2, 18 August 2017, by Cyberboss and nfreader

Modified table 'death', adding the columns `last_words` and 'suicide'.

ALTER TABLE `death`
ADD COLUMN `last_words` varchar(255) DEFAULT NULL AFTER `staminaloss`,
ADD COLUMN `suicide` tinyint(0) NOT NULL DEFAULT '0' AFTER `last_words`;

Remember to add a prefix to the table name if you use them.

----------------------------------------------------

Version 3.1, 20th July 2017, by Shadowlight213
Added role_time table to track time spent playing departments.
Also, added flags column to the player table.

CREATE TABLE `role_time` ( `ckey` VARCHAR(32) NOT NULL , `job` VARCHAR(128) NOT NULL , `minutes` INT UNSIGNED NOT NULL, PRIMARY KEY (`ckey`, `job`) ) ENGINE = InnoDB;

ALTER TABLE `player` ADD `flags` INT NOT NULL default '0' AFTER `accountjoindate`;

Remember to add a prefix to the table name if you use them.

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Version 3.0, 28 June 2017, by oranges
Added schema_revision to store the current db revision, why start at 3.0?

because:
15:09 <+MrStonedOne> 1.0 was erro, 2.0 was when i removed erro_, 3.0 was when jordie made all the strings that hold numbers numbers

CREATE TABLE `schema_revision` (
`major` TINYINT(3) UNSIGNED NOT NULL ,
`minor` TINYINT(3) UNSIGNED NOT NULL ,
`date` DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP NOT NULL,
PRIMARY KEY ( `major`,`minor` )
) ENGINE = INNODB;

INSERT INTO `schema_revision` (`major`, `minor`) VALUES (3, 0);

Remember to add a prefix to the table name if you use them.

----------------------------------------------------

26 June 2017, by Jordie0608

Modified table 'poll_option', adding the column 'default_percentage_calc'.

ALTER TABLE `poll_option` ADD COLUMN `default_percentage_calc` TINYINT(1) UNSIGNED NOT NULL DEFAULT '1' AFTER `descmax`

Remember to add a prefix to the table name if you use them.

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22 June 2017, by Jordie0608

Modified table 'poll_option', removing the column 'percentagecalc'.

ALTER TABLE `poll_option` DROP COLUMN `percentagecalc`

Remember to add a prefix to the table name if you use them.

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8 June 2017, by Jordie0608

Modified table 'death', adding column 'round_id', removing column 'gender' and replacing column 'coord' with the columns 'x_coord', 'y_coord' and 'z_coord'.

START TRANSACTION;
ALTER TABLE `death` DROP COLUMN `gender`, ADD COLUMN `x_coord` SMALLINT(5) UNSIGNED NOT NULL AFTER `coord`, ADD COLUMN `y_coord` SMALLINT(5) UNSIGNED NOT NULL AFTER `x_coord`, ADD COLUMN `z_coord` SMALLINT(5) UNSIGNED NOT NULL AFTER `y_coord`, ADD COLUMN `round_id` INT(11) NOT NULL AFTER `server_port`;
SET SQL_SAFE_UPDATES = 0;
UPDATE `death` SET `x_coord` = SUBSTRING_INDEX(`coord`, ',', 1), `y_coord` = SUBSTRING_INDEX(SUBSTRING_INDEX(`coord`, ',', 2), ',', -1), `z_coord` = SUBSTRING_INDEX(`coord`, ',', -1);
SET SQL_SAFE_UPDATES = 1;
ALTER TABLE `death` DROP COLUMN `coord`;
COMMIT;

Remember to add a prefix to the table name if you use them.

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30 May 2017, by MrStonedOne

Z levels changed, this query allows you to convert old ss13 death records:

UPDATE death SET coord = CONCAT(SUBSTRING_INDEX(coord, ',', 2), ', ', CASE TRIM(SUBSTRING_INDEX(coord, ',', -1)) WHEN 1 THEN 2 WHEN 2 THEN 1 ELSE TRIMSUBSTRING_INDEX(coord, ',', -1) END)

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26 May 2017, by Jordie0608

Modified table 'ban', adding the column 'round_id'.

ALTER TABLE `ban` ADD COLUMN `round_id` INT(11) NOT NULL AFTER `server_port`

Remember to add a prefix to the table name if you use them.

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20 May 2017, by Jordie0608

Created table `round` to replace tracking of the datapoints 'round_start', 'round_end', 'server_ip', 'game_mode', 'round_end_results', 'end_error', 'end_proper', 'emergency_shuttle', 'map_name' and 'station_renames' in the `feedback` table.
Once created this table is populated with rows from the `feedback` table.

START TRANSACTION;
CREATE TABLE `round` (`id` INT(11) NOT NULL AUTO_INCREMENT, `start_datetime` DATETIME NOT NULL, `end_datetime` DATETIME NULL, `server_ip` INT(10) UNSIGNED NOT NULL, `server_port` SMALLINT(5) UNSIGNED NOT NULL, `commit_hash` CHAR(40) NULL, `game_mode` VARCHAR(32) NULL, `game_mode_result` VARCHAR(64) NULL, `end_state` VARCHAR(64) NULL, `shuttle_name` VARCHAR(64) NULL, `map_name` VARCHAR(32) NULL, `station_name` VARCHAR(80) NULL, PRIMARY KEY (`id`));
ALTER TABLE `feedback` ADD INDEX `tmp` (`round_id` ASC, `var_name` ASC);
INSERT INTO `round`
(`id`, `start_datetime`, `end_datetime`, `server_ip`, `server_port`, `commit_hash`, `game_mode`, `game_mode_result`, `end_state`, `shuttle_name`, `map_name`, `station_name`)
SELECT DISTINCT ri.round_id, IFNULL(STR_TO_DATE(st.details,'%a %b %e %H:%i:%s %Y'), TIMESTAMP(0)), STR_TO_DATE(et.details,'%a %b %e %H:%i:%s %Y'), IFNULL(INET_ATON(SUBSTRING_INDEX(IF(si.details = '', '0', IF(SUBSTRING_INDEX(si.details, ':', 1) LIKE '%_._%', si.details, '0')), ':', 1)), INET_ATON(0)), IFNULL(IF(si.details LIKE '%:_%', CAST(SUBSTRING_INDEX(si.details, ':', -1) AS UNSIGNED), '0'), '0'), ch.details, gm.details, mr.details, IFNULL(es.details, ep.details), ss.details, mn.details, sn.details
FROM `feedback`AS ri
LEFT JOIN `feedback` AS st ON ri.round_id = st.round_id AND st.var_name = "round_start" LEFT JOIN `feedback` AS et ON ri.round_id = et.round_id AND et.var_name = "round_end" LEFT JOIN `feedback` AS si ON ri.round_id = si.round_id AND si.var_name = "server_ip" LEFT JOIN `feedback` AS ch ON ri.round_id = ch.round_id AND ch.var_name = "revision" LEFT JOIN `feedback` AS gm ON ri.round_id = gm.round_id AND gm.var_name = "game_mode" LEFT JOIN `feedback` AS mr ON ri.round_id = mr.round_id AND mr.var_name = "round_end_result" LEFT JOIN `feedback` AS es ON ri.round_id = es.round_id AND es.var_name = "end_state" LEFT JOIN `feedback` AS ep ON ri.round_id = ep.round_id AND ep.var_name = "end_proper" LEFT JOIN `feedback` AS ss ON ri.round_id = ss.round_id AND ss.var_name = "emergency_shuttle" LEFT JOIN `feedback` AS mn ON ri.round_id = mn.round_id AND mn.var_name = "map_name" LEFT JOIN `feedback` AS sn ON ri.round_id = sn.round_id AND sn.var_name = "station_renames";
ALTER TABLE `feedback` DROP INDEX `tmp`;
COMMIT;

It's not necessary to delete the rows from the `feedback` table but henceforth these datapoints will be in the `round` table.

Remember to add a prefix to the table names if you use them

----------------------------------------------------

21 April 2017, by Jordie0608

Modified table 'player', adding the column 'accountjoindate', removing the column 'id' and making the column 'ckey' the primary key.

ALTER TABLE `player` DROP COLUMN `id`, ADD COLUMN `accountjoindate` DATE NULL AFTER `lastadminrank`, DROP PRIMARY KEY, ADD PRIMARY KEY (`ckey`), DROP INDEX `ckey`;

Remember to add a prefix to the table name if you use them.

----------------------------------------------------
10 March 2017, by Jordie0608

Modified table 'death', adding the columns 'toxloss', 'cloneloss', and 'staminaloss' and table 'legacy_population', adding the columns 'server_ip' and 'server_port'.

ALTER TABLE `death` ADD COLUMN `toxloss` SMALLINT(5) UNSIGNED NOT NULL AFTER `oxyloss`, ADD COLUMN `cloneloss` SMALLINT(5) UNSIGNED NOT NULL AFTER `toxloss`, ADD COLUMN `staminaloss` SMALLINT(5) UNSIGNED NOT NULL AFTER `cloneloss`;

ALTER TABLE `legacy_population` ADD COLUMN `server_ip` INT(10) UNSIGNED NOT NULL AFTER `time`, ADD COLUMN `server_port` SMALLINT(5) UNSIGNED NOT NULL AFTER `server_ip`;

Remember to add a prefix to the table name if you use them.

----------------------------------------------------

19 February 2017, by Jordie0608

Optimised and indexed significant portions of the schema.

See the file 'optimisations_2017-02-19.sql' for instructions on how to apply these changes to your database.

Remember to add a prefix to the table name if you use them

----------------------------------------------------

30 January 2017, by Lzimann

Modified table 'death', adding the columns 'mapname' and 'server'.

ALTER TABLE `death` ADD COLUMN `mapname` TEXT NOT NULL AFTER `coord`, ADD COLUMN `server` TEXT NOT NULL AFTER `mapname`

Remember to add a prefix to the table name if you use them

----------------------------------------------------

25 January 2017, by Jordie0608

Created table 'messages' to supersede the 'notes', 'memos', and 'watchlist' tables; they must be collated into this new table

To create this new table run the following command:

CREATE  TABLE `messages` (`id` INT(11) NOT NULL AUTO_INCREMENT , `type` VARCHAR(32) NOT NULL , `targetckey` VARCHAR(32) NOT NULL , `adminckey` VARCHAR(32) NOT NULL , `text` TEXT NOT NULL , `timestamp` DATETIME NOT NULL , `server` VARCHAR(32) NULL , `secret` TINYINT(1) NULL DEFAULT 1 , `lasteditor` VARCHAR(32) NULL , `edits` TEXT NULL , PRIMARY KEY (`id`) )

To copy the contents of the 'notes', 'memos', and 'watchlist' tables to this new table run the following commands:

INSERT INTO `messages`
(`id`,`type`,`targetckey`,`adminckey`,`text`,`timestamp`,`server`,`secret`,`lasteditor`,`edits`) SELECT `id`, "note", `ckey`, `adminckey`, `notetext`, `timestamp`, `server`, `secret`, `last_editor`, `edits` FROM `notes`

INSERT INTO `messages`
(`type`,`targetckey`,`adminckey`,`text`,`timestamp`,`lasteditor`,`edits`) SELECT "memo", `ckey`, `ckey`, `memotext`, `timestamp`, `last_editor`, `edits` FROM `memo`

INSERT INTO `messages`
(`type`,`targetckey`,`adminckey`,`text`,`timestamp`,`lasteditor`,`edits`) SELECT "watchlist entry", `ckey`, `adminckey`, `reason`, `timestamp`, `last_editor`, `edits` FROM `watch`

It's not necessary to delete the 'notes', 'memos', and 'watchlist' tables but they will no longer be used.

Remember to add a prefix to the table names if you use them

----------------------------------------------------

1 September 2016, by Jordie0608

Modified table 'notes', adding column 'secret'.

ALTER TABLE `notes` ADD COLUMN `secret` TINYINT(1) NOT NULL DEFAULT '1'  AFTER `server`

Remember to add a prefix to the table name if you use them

----------------------------------------------------

19 August 2016, by Shadowlight213

Changed appearance bans to be jobbans.

UPDATE `ban` SET `job` = "appearance", `bantype` = "JOB_PERMABAN" WHERE `bantype` = "APPEARANCE_PERMABAN"

Remember to add a prefix to the table name if you use them

----------------------------------------------------

3 July 2016, by Jordie0608

Modified table 'poll_question', adding column 'dontshow' which was recently added to the server schema.

ALTER TABLE `poll_question` ADD COLUMN `dontshow` TINYINT(1) NOT NULL DEFAULT '0'  AFTER `for_trialmin`

Remember to add a prefix to the table name if you use them

----------------------------------------------------

16th April 2016

Added ipintel table, only required if ip intel is enabled in the config

CREATE TABLE `ipintel` (
`ip` INT UNSIGNED NOT NULL ,
`date` TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP NOT NULL ,
`intel` REAL NOT NULL DEFAULT  '0',
PRIMARY KEY (  `ip` )
) ENGINE = INNODB;

---------------------------------------------------

21 September 2015, by Jordie0608

Modified table 'poll_question', adding columns 'createdby_ckey', 'createdby_ip' and 'for_trialmin' to bring it inline with the schema used by the tg servers.

ALTER TABLE `poll_question` ADD COLUMN `createdby_ckey` VARCHAR(45) NULL DEFAULT NULL AFTER `multiplechoiceoptions`, ADD COLUMN `createdby_ip` VARCHAR(45) NULL DEFAULT NULL AFTER `createdby_ckey`, ADD COLUMN `for_trialmin` VARCHAR(45) NULL DEFAULT NULL AFTER `createdby_ip`

Remember to add a prefix to the table name if you use them

----------------------------------------------------

27 August 2015, by Jordie0608

Modified table 'watch', removing 'id' column, making 'ckey' primary and adding the columns 'timestamp', 'adminckey', 'last_editor' and 'edits'.

ALTER TABLE `watch` DROP COLUMN `id`, ADD COLUMN `timestamp` datetime NOT NULL AFTER `reason`, ADD COLUMN `adminckey` varchar(32) NOT NULL AFTER `timestamp`, ADD COLUMN `last_editor` varchar(32) NULL AFTER `adminckey`, ADD COLUMN `edits` text NULL AFTER `last_editor`, DROP PRIMARY KEY, ADD PRIMARY KEY (`ckey`)

Remember to add a prefix to the table name if you use them.

----------------------------------------------------

14 August 2015, by Jordie0608

Added new table 'notes' to replace BYOND's .sav note system.

To create this new table run the following command:

CREATE TABLE `notes` ( `id` int(11) NOT NULL AUTO_INCREMENT, `ckey` varchar(32) NOT NULL, `notetext` text NOT NULL, `timestamp` datetime NOT NULL, `adminckey` varchar(32) NOT NULL, `last_editor` varchar(32), `edits` text, `server` varchar(50) NOT NULL, PRIMARY KEY (`id`))

Remember to add prefix to the table name if you use them.

----------------------------------------------------

28 July 2015, by Jordie0608

Modified table 'memo', removing 'id' column and making 'ckey' primary.

ALTER TABLE `memo` DROP COLUMN `id`, DROP PRIMARY KEY, ADD PRIMARY KEY (`ckey`)

Remember to add prefix to the table name if you use them.

----------------------------------------------------

19 July 2015, by Jordie0608

Added new table 'memo' for use with admin memos.

To create this new table run the following command:

CREATE TABLE `memo` (`id` int(11) NOT NULL AUTO_INCREMENT, `ckey` varchar(32) NOT NULL, `memotext` text NOT NULL, `timestamp` datetime NOT NULL, `last_editor` varchar(32), `edits` text, PRIMARY KEY (`id`))

Remember to add prefix to the table name if you use them.

----------------------------------------------------

7 July 2015, by MrStonedOne

Removed the privacy poll and related table. Existing codebases may safely delete the privacy table after updating:

DROP TABLE `privacy`;

--------------------------------------------------

19 May 2015, by Jordie0608

Added new table 'watch' for use in flagging ckeys. It shouldn't ever exist, but also added command to de-erroize this new table just in case someone does make it like that.

To create this new table run the following command:

CREATE TABLE `watch` (`id` int(11) NOT NULL AUTO_INCREMENT, `ckey` varchar(32) NOT NULL, `reason` text NOT NULL, PRIMARY KEY (`id`))

Remember to add prefix to the table name if you use them.

----------------------------------------------------

19 September 2014, by MrStonedOne

Removed erro_ from table names. dbconfig.txt has a option allowing you to change the prefix used in code, defaults to "erro_" if left out for legacy reasons.

If you are creating a new database and want to change the prefix, simply find and replace SS13_ to what ever you want (including nothing) and set the prefix value

Two schema files are now included, one with prefixes and one without.

If you have an existing database, and you want to rid your database of erros, you will have to rename all of the tables. A bit sql is included to do just that in errofreedatabase.sql Feel free to find and replace the prefix to what ever you want (or nothing)

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4 November 2013, by Errorage

The column 'deleted' was added to the erro_library table. If set to anything other than null, the book is interpreted as deleted.

To update your database, execute the following code in phpmyadmin, mysql workbench or whatever program you use:

ALTER TABLE erro_library ADD COLUMN deleted TINYINT(1) NULL DEFAULT NULL  AFTER datetime;

If you want to 'soft delete' a book (meaning it remains in the library, but isn't viewable by players), set the value in the 'deleted' column for the row to 1. To undelete, set it back to null. If you're making an admin tool to work with this, execute the following SQL statement to soft-delete the book with id someid:

UPDATE erro_library SET deleted = 1 WHERE id = someid

(Replace someid with the id of the book you want to soft delete.)

----------------------------------------------------