bugfix: fix mysql insert use select last insert id is undo_log id val…

…ue (apache#2659)

rm-datasource/src/main/java/io/seata/rm/datasource/undo/mysql/MySQLUndoLogManager.java

@@ -47,7 +47,7 @@ public class MySQLUndoLogManager extends AbstractUndoLogManager {
             + ClientTableColumnsName.UNDO_LOG_CONTEXT + ", " + ClientTableColumnsName.UNDO_LOG_ROLLBACK_INFO + ", "
             + ClientTableColumnsName.UNDO_LOG_LOG_STATUS + ", " + ClientTableColumnsName.UNDO_LOG_LOG_CREATED + ", "
             + ClientTableColumnsName.UNDO_LOG_LOG_MODIFIED + ")" +
-            " VALUES (?, ?, ?, ?, ?, now(), now())";
+            " VALUES (?, ?, ?, ?, ?, now(6), now(6))";
 
     private static final String DELETE_UNDO_LOG_BY_CREATE_SQL = "DELETE FROM " + UNDO_LOG_TABLE_NAME +
             " WHERE log_created <= ? LIMIT ?";

script/client/at/db/mysql.sql

@@ -1,16 +1,14 @@
 -- for AT mode you must to init this sql for you business database. the seata server not need it.
 CREATE TABLE IF NOT EXISTS `undo_log`
 (
-    `id`            BIGINT(20)   NOT NULL AUTO_INCREMENT COMMENT 'increment id',
     `branch_id`     BIGINT(20)   NOT NULL COMMENT 'branch transaction id',
     `xid`           VARCHAR(100) NOT NULL COMMENT 'global transaction id',
     `context`       VARCHAR(128) NOT NULL COMMENT 'undo_log context,such as serialization',
     `rollback_info` LONGBLOB     NOT NULL COMMENT 'rollback info',
     `log_status`    INT(11)      NOT NULL COMMENT '0:normal status,1:defense status',
-    `log_created`   DATETIME     NOT NULL COMMENT 'create datetime',
-    `log_modified`  DATETIME     NOT NULL COMMENT 'modify datetime',
-    PRIMARY KEY (`id`),
+    `log_created`   DATETIME(6)  NOT NULL COMMENT 'create datetime',
+    `log_modified`  DATETIME(6)  NOT NULL COMMENT 'modify datetime',
     UNIQUE KEY `ux_undo_log` (`xid`, `branch_id`)
 ) ENGINE = InnoDB
   AUTO_INCREMENT = 1
-  DEFAULT CHARSET = utf8 COMMENT ='AT transaction mode undo table';
+  DEFAULT CHARSET = utf8 COMMENT ='AT transaction mode undo table';