更新语句，更新两个字段

@Update("update bank_file_info set save_type = #{saveType},format_type_id=#{formatTypeId} where id = #{fileId}")
void updateSaveType(@Param("fileId") Integer fileId, @Param("saveType") Integer saveType, @Param("formatTypeId") Integer formatTypeId);

 批量插入一个对象集合：

@Insert({
        "<script>",
        "insert into bank_file_info(p_id, rate, folder_name, source_name, file_code, size, format, file_name, source_url,new_source_url,file_type,upload_time,is_border,is_turn) values ",
        "<foreach collection='list' item='item' index='index' separator=','>",
        "(#{item.pId}, #{item.rate}, #{item.folderName}, #{item.sourceName}, #{item.fileCode}, #{item.size}, #{item.format}, #{item.fileName}, #{item.sourceUrl}," +
                "#{item.newSourceUrl},#{item.fileType},#{item.uploadTime},#{item.isBorder},#{item.isTurn})",
        "</foreach>",
        "</script>"
})
@Options(useGeneratedKeys = true, keyProperty = "id")
void insertFileList(@Param(value = "list") List<BankFileInfo> fileInfoList);

 数据库新增字段，这里要注意版本问题，有的版本是这种写法default（0），后边是注释

 ALTER TABLE bank_file_info add save_type TINYINT(1) DEFAULT 0 COMMENT '保存状态 0：版式与表头均未存储1：存储版式2：存储表头信息'; 

 删除语句：

@Delete("delete from bank_table_head where file_id = #{fileId} ")
void delData(@Param("fileId") Integer fileID);

 查询语句：

@Select("select * from bank_file_info where rate = '2' and format = 'pdf' and del_flag = 0  and progress = 0 limit 1")
BankFileInfo selectPdfFile();

创建索引：create  index  索引名   on  表名（列名）注释

CREATE INDEX PersonIndex ON Person (LastName) COMMENT('持续时间索引')