mybatis-plus高级语法

分组条件构造器

List<Object> objects = listObjs(new QueryWrapper<Budget>()
    .select("type_id as type, sum(amount) as total").lambda()
    .eq(Budget::getDeptId, budgetQuery.getDeptId())
    .ge(Budget::getExpectTime, budgetQuery.getStartDate())
    .le(Budget::getExpectTime, budgetQuery.getEndDate())
    .groupBy(Budget::getTypeId));