LambdaQueryWrapper distinct
时间: 2023-10-14 11:03:58 浏览: 120
SQL select distinct的使用方法
LambdaQueryWrapper的distinct方法可以用于去除查询结果中的重复元素。在使用LambdaQueryWrapper进行查询时,可以使用.distinct()方法来实现这个功能。例如,可以按照以下方式使用.distinct()方法来实现去除查询结果中的重复元素:
```java
QueryWrapper<Student> queryWrapper = new QueryWrapper<>();
queryWrapper.select("name").distinct(true);
List<Student> students = studentMapper.selectList(queryWrapper);
```
以上代码会查询出所有学生的姓名,并且去除重复的姓名。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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