fix(DB): broken (#24248)

data/sql/updates/db_world/2025_12_29_12.sql

@@ -1,5 +1,6 @@
 -- DB update 2025_12_29_11 -> 2025_12_29_12
 --
+-- Update to rehash for reapply
 DROP TABLE IF EXISTS `trainer`;
 CREATE TABLE `trainer` (
     `Id` INT UNSIGNED DEFAULT 0 NOT NULL,
@@ -30,21 +31,37 @@ CREATE TABLE `trainer_spell` (
     `ReqAbility2` int unsigned DEFAULT 0 NOT NULL,
     `ReqAbility3` int unsigned DEFAULT 0 NOT NULL,
     `ReqLevel` tinyint unsigned DEFAULT 0 NOT NULL,
-    `VerifiedBuild` int DEFAULT 0 NULL
+    `VerifiedBuild` int DEFAULT 0 NULL,
+    PRIMARY KEY (`TrainerId`, `SpellId`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci;
 
 DROP TABLE IF EXISTS `creature_default_trainer`;
 CREATE TABLE `creature_default_trainer` (
     `CreatureId` int unsigned NOT NULL,
-    `TrainerId` int unsigned DEFAULT 0 NOT NULL
+    `TrainerId` int unsigned DEFAULT 0 NOT NULL,
+    PRIMARY KEY (`CreatureId`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci;
 
 -- Drop unused table
 DROP TABLE IF EXISTS `npc_trainer`;
 
 -- Drop removed columns
-ALTER TABLE `creature_template`
+DELIMITER // 
-  DROP `trainer_type`,
+CREATE PROCEDURE DropColumns() 
-  DROP `trainer_spell`,
+BEGIN
-  DROP `trainer_class`,
+IF EXISTS (SELECT 1 FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'creature_template' AND COLUMN_NAME = 'trainer_type') THEN
-  DROP `trainer_race`;
+    ALTER TABLE `creature_template` DROP `trainer_type`;
+END IF;
+IF EXISTS (SELECT 1 FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'creature_template' AND COLUMN_NAME = 'trainer_spell') THEN
+    ALTER TABLE `creature_template` DROP `trainer_spell`;
+END IF;
+IF EXISTS (SELECT 1 FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'creature_template' AND COLUMN_NAME = 'trainer_class') THEN
+    ALTER TABLE `creature_template` DROP `trainer_class`;
+END IF;
+IF EXISTS (SELECT 1 FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'creature_template' AND COLUMN_NAME = 'trainer_race') THEN
+    ALTER TABLE `creature_template` DROP `trainer_race`;
+END IF;
+END //
+DELIMITER ; -- 
+CALL DropColumns();
+DROP PROCEDURE DropColumns;

data/sql/updates/db_world/2025_12_29_13.sql

@@ -1,4 +1,5 @@
 -- DB update 2025_12_29_12 -> 2025_12_29_13
+-- Update to rehash for reapply
 DELETE FROM `command` WHERE `name` IN ('reload trainer', 'reload npc_trainer');
 INSERT INTO `command` (`name`,`security`,`help`) VALUES ('reload trainer',3,'Syntax: .reload trainer\nReloads trainer,trainer_locale,trainer_spell and creature_default_trainer tables.');
 

data/sql/updates/db_world/2025_12_29_14.sql

@@ -1,5 +1,6 @@
 -- DB update 2025_12_29_13 -> 2025_12_29_14
 --
+-- Update to rehash for reapply
 -- Truesilver gauntlets require skill 225, not 245
 UPDATE `trainer_spell` SET `ReqSkillRank`=225 WHERE `TrainerId`=124 AND `SpellId`=9954;
 

data/sql/updates/db_world/2025_12_29_16.sql

@@ -1,17 +1,2 @@
 -- DB update 2025_12_29_15 -> 2025_12_29_16
 --
-ALTER TABLE `trainer`
-    DROP PRIMARY KEY,
-    ADD PRIMARY KEY (`Id`);
-
-ALTER TABLE `trainer_locale`
-    DROP PRIMARY KEY,
-    ADD PRIMARY KEY (`Id`, `locale`);
-
-ALTER TABLE `trainer_spell`
-    DROP PRIMARY KEY,
-    ADD PRIMARY KEY (`TrainerId`, `SpellId`);
-
-ALTER TABLE `creature_default_trainer`
-    DROP PRIMARY KEY,
-    ADD PRIMARY KEY (`CreatureId`);