publicclassUpsertManager{publicstaticvoidupsertRecord(Connectionconnection,Stringfield1,Stringfield2,Stringvalue){if(RecordChecker.checkRecordExists(connection,field1,field2)){// 更新记录StringupdateQuery="UPDATE your_table SET value = ? WHERE field1 = ? AND field2 = ?";try(PreparedStatementstatement=...
更新记录 // 更新记录publicvoidupdateRecord(Connectionconn,intid,Stringdata){Stringsql="UPDATE table SET data = ? WHERE id = ?";try{PreparedStatementps=conn.prepareStatement(sql);ps.setString(1,data);ps.setInt(2,id);ps.executeUpdate();}catch(SQLExceptione){e.printStackTrace();}} 1. 2. ...
Mapper.xml: <insert id="insertOrUpdate" parameterType="com.spring.security.demo.entity.ContactBook"> INSERT INTO `tbl_contact_book`(`imei`, `contact_list`, `ability`, `create_time`, `update_time`) VALUES (#{contactBook.imei}, #{contactBook.contactList}, #{contactBook.ability},#{contact...
1. INSERT用于向数据库的表中插入1条记录 insertinto表名 (字段1,字段2,...)values(数据1,数据2,数据3...) 示例 -- 如果表存在,就删除droptableifexistsclasses;showtables;createtableclasses (idBIGINTnotnullauto_increment, namevarchar(10)notnull,PRIMARYKEY(id))defaultcharset=utf8;select*fromclasses;...
users.setSex("男");//生成插入语句Stringsql=getInsertSql("users.users",Users.class,users); System.out.println(sql);//生成更新语句Stringsql_update=getUpdateSql("users.users",Users.class,users); System.out.println(sql_update);//生成查询语句Stringsql_select=getSelectSql("users.users",users);...
String updateSql = GenerateSql_Util.getSqlUpdate(u) + " WHERE id = '"+ u.getId()+"';"; System.out.println(updateSql); } } 结果: INSERT INTO user(id,username,password) VALUES('1','u1','p1'); UPDATE user SET id = '1',username = 'u1',password = 'p1' WHERE id = '1';...
重做insert 插入delete 移除add 加入append 添加clean 清理clear 清除index 索引sort 排序find 查找search 搜索increase 增加decrease 减少play 播放pause 暂停launch 启动run 运行compile 编译execute 执行debug 调试trace 跟踪observe 观察listen 监听build 构建publish 发布input 输入output 输出encode 编码decode 解码encrypt ...
deleteId(d); i++; } return i; } // @Override // public int Modify(User user) throws Exception { // String sql="update login set username=user.getUsername and password=user.getPassword where id=12"; // UserUtilsImpl userUtilsImpl=new UserUtilsImpl(); // int i = Utils.addLineOr...
这时就可以使用InsertOrUpdate操作。在mysql数据库中如下: insert into goods_category (goods_id,category_id,create_time,update_time) values(#{goodsId},#{categoryId},now(),now()) on DUPLICATE KEY UPDATE update_time=now() 4)多版本控制:这种方法适合在更新的场景中,比如我们要更新商品的名字,这时...
I didn't look deeper to it but do you have the same issue if you build completely your object graphRentalProgramas 1 object (outside of the commit transaction) then callinsertOrUpdate(rentalProgram)? this method will use the same cache for the entire insert/update operations ...