添加修正flyway migrate 38错误问题

flyway_repaire_migrate_38.sql

@@ -0,0 +1,36 @@
+--  IM服务在2020.10.6-2020-11.2号之间的版本升级到最新版本时，可能会提示出现如下的错误：
+--  Exception in thread "main" org.flywaydb.core.api.FlywayException: Validate failed: Detected resolved migration not applied to database: 38
+--      at org.flywaydb.core.Flyway.doValidate(Flyway.java:1482)
+--      at org.flywaydb.core.Flyway.access$100(Flyway.java:85)
+--      at org.flywaydb.core.Flyway$1.execute(Flyway.java:1364)
+--      at org.flywaydb.core.Flyway$1.execute(Flyway.java:1356)
+--      ...
+--
+--  当出现这个问题后，执行这个sql就可以修复了。
+--
+--
+DROP TABLE IF EXISTS `t_file`;
+CREATE TABLE `t_file` (
+  `_mid` bigint(20) NOT NULL PRIMARY KEY,
+  `_from` varchar(64) NOT NULL,
+  `_type` tinyint NOT NULL DEFAULT 0,
+  `_target` varchar(64) NOT NULL,
+  `_line` int(11) NOT NULL DEFAULT 0,
+  `_name` varchar(128) DEFAULT '',
+  `_url` varchar(1024) NOT NULL DEFAULT '',
+  `_size` int(11) NOT NULL DEFAULT 0,
+  `_download_count` int(11) DEFAULT 0,
+  `_dt` bigint(20) NOT NULL,
+  INDEX `file_conv_index` (`_type`, `_line`, `_target`, `_mid`),
+  INDEX `file_user_index` (`_from`, `_mid`)
+)
+ENGINE = InnoDB
+DEFAULT CHARACTER SET = utf8mb4
+COLLATE = utf8mb4_unicode_ci;
+
+
+alter table `t_group` modify column `_searchable` int(11) NOT NULL DEFAULT 0;
+
+update flyway_schema_history set installed_rank = 40 where version = 40;
+
+insert into flyway_schema_history values (38,'38','alter group searchable column','SQL','V38__alter_group_searchable_column.sql',-524664704,'root','2020-07-21 14:43:50',1126,1),(39,'39','create files table','SQL','V39__create_files_table.sql',1144437159,'root','2020-08-03 03:15:04',503,1);