update 使用 in 优化 or 提升索引命中率

疯狂的狮子li

2022-03-14 e480f616e055e9fdfdb1bac38de9b01ddbcca476

 ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysUserServiceImpl.java

@@ -82,9 +82,9 @@
                List<SysDept> deptList = deptMapper.selectList(new LambdaQueryWrapper<SysDept>()
                    .select(SysDept::getDeptId)
                    .apply(DataBaseHelper.findInSet(user.getDeptId(), "ancestors")));
                w.eq("u.dept_id", user.getDeptId())
                    .or()
                    .in("u.dept_id", deptList.stream().map(SysDept::getDeptId).collect(Collectors.toList()));
                List<Long> ids = deptList.stream().map(SysDept::getDeptId).collect(Collectors.toList());
                ids.add(user.getDeptId());
                w.in("u.dept_id", ids);
            });
        return wrapper;
    }