fix: multi-tenant phase 2

database/upgrade/upg_sys_user.sql

@@ -39,6 +39,6 @@ ALTER TABLE `sys_user` MODIFY COLUMN `phonenumber` varchar(16) CHARACTER SET utf
 ALTER TABLE `sys_user` MODIFY COLUMN `remark` varchar(500) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL DEFAULT '' COMMENT '备注' AFTER `update_time`;
 
 -- multi-tenancy
-ALTER TABLE `tenants_db`.`sys_user` ADD COLUMN IF NOT EXISTS `tenant_id` bigint(20) NULL DEFAULT NULL COMMENT 'Tenant ID' AFTER `dept_id`;
+ALTER TABLE `sys_user` ADD COLUMN IF NOT EXISTS `tenant_id` bigint(20) NULL DEFAULT NULL DEFAULT NULL COMMENT 'Tenant ID' AFTER `dept_id`;
 
 SET FOREIGN_KEY_CHECKS=1;