UpdateWrapper<User> wrapper = new UpdateWrapper<>(); wrapper.set("status", 1) .eq("gender", "male") .between("age", 20, 30) .inSql("city", "select city from city_table where province='Guangdong'"); int count =
利用mybatis 的 collection 标签,可以在每次查询文章主体同时通过 queryparaminstancelist 级联查询出关联表数据。 queryparaminstancelist 的 sql 语句 04 一对一级联查询 利用mybatis 的 association 标签,一对一查询关联表数据。 查询sql语句: MsArticlecount 实体对象的属性值可以从 上面的 select 后的 sql 字段进...
LambdaQueryChainWrapper对象后面可以直接跟方法名: Activityone=newLambdaQueryChainWrapper<>(activityMapper).eq(Activity::getId,activityId).select(Activity::getTitle).one(); 1. 2. 3. 4. 上面直接调用了one()查询方法,其他list()、count()等方法也是可以的,等价于: Activity one = activityMapper.selectOn...
<resultMap id="BaseResultMap" type="com.unicom.portal.pcm.entity.ArticleEntity"> <association property="articleCount" javaType="com.unicom.portal.pcm.entity.MsArticleCount"/> </resultMap> 查询sql语句: MsArticlecount 实体对象的属性值可以从 上面的 select 后的 sql 字段进行匹配映射获取。 05 foreac...
List<User> bannerItems =newLambdaQueryChainWrapper<>(bannerItemMapper) .eq(User::getuserName, userName) .list(); // 增加条件 intcount =tcmcConfigTreeService.count(newLambdaQueryWrapper<TcmcConfigTree>() .eq(TcmcConfigTree::getNodeName, tcmcConfigTree.getNodeName()).ne(TcmcConfigTree::getId, ...
LambdaQueryWrapper<UserAggr> wrapper = Wrappers.lambdaQuery(UserAggr.class) .select(UserAggr::getDeptId, UserAggr::getCount) .groupBy(UserAggr::getDeptId); List<UserAggr> userAggrList = userAggrMapper.selectList(wrapper); List<UserAggrVo> userAggrVoList = EntityUtils.toList(userAggrList, UserAg...
publicList<UserAggrVo>selectList3(){LambdaQueryWrapper<UserAggr>wrapper=Wrappers.lambdaQuery(UserAggr.class).select(UserAggr::getDeptId,UserAggr::getCount).groupBy(UserAggr::getDeptId);List<UserAggr>userAggrList=userAggrMapper.selectList(wrapper);List<UserAggrVo>userAggrVoList=EntityUtils.toList(user...
queryForm.getDsCode(); String dsSourceName = queryForm.getDsSourceName(); String dsNewsColumns = queryForm.getDsNewsColumns(); if (!StringUtil.isEmpty(dsCode)) { lqw.likeRight(Ds::getDsCode, SqlUtil.escapeLike(dsCode)); lqw.groupBy(Ds::getDsCode).having("count (0) >1"); } ...
@Test public void testLambdaQueryOfOr_And() { LambdaQueryWrapper<UserEntity> lqw = Wrappers.lambdaQuery(); lqw.eq(UserEntity::getSex, 0L) .and(wrapper->wrapper.eq(UserEntity::getUserName,"dunzung") .or().ge(UserEntity::getAge, 50)); List<UserEntity> userList = userMapper.selectList...
@Test @Order(26) void testServiceImplInnerLambdaQuery() { H2User tomcat = userService.lambdaQuery().eq(H2User::getName, "Tomcat").one(); Assertions.assertNotNull(tomcat); Assertions.assertNotEquals(0L, userService.lambdaQuery().like(H2User::getName, "a").count()...