Question

我有两个表员工主表和时间表。

员工表格结构：

+------------+---------+
| emp_number | empname |
+------------+---------+
|          2 | Jagdish |
|          3 | Sulata  |
|          4 | Prasad  |
|          5 | Vijay   |
|          6 | Armin   |
+------------+---------+

时间表表格结构：

+------------+--------+------------+------------+
| emp_number | status | startDate  | EndDate    |
+------------+--------+------------+------------+
|          2 | 0      | 2016-01-01 | 2016-01-07 |
|          3 | 1      | 2016-02-01 | 2016-02-06 |
|          4 | 40     | 2016-01-01 | 2016-01-07 |
|          9 | 0      | 2016-01-06 | 2016-01-12 |
|         10 | 4      | 2016-01-01 | 2016-01-08 |
+------------+--------+------------+------------+

我们可以编写一个查询来按周使用分组来获取所有员工的记录吗？请指导我。谢谢。

Answer 1

SELECT * FROM Employee Table
WHERE NOT EXISTS(SELECT 1 FROM Timesheet WHERE Employee.emp_number = Timesheet 
.emp_number AND Status IN (0,40))

Answer 2

根据您提出的问题尝试以下代码

select employee.* 
from employee
where employee.emp_number not in (select emp_number from timesheet)
and timesheet.status in (0,40) and timesheet.enddate between '2016-01-01'
and '2016-01-07'

Answer 3

我相信这是正确的代码：

SELECT *
FROM Timesheet INNER JOIN Employee ON Timesheet.emp_number=Employee.emp_number
WHERE (Employee.status = 0 OR Employee.status = 40) 
  AND (Timesheet.startDate = '2016-01-01' AND Timesheet.EndDate = '2016-01-07')

您可能需要根据startDate和EndDate的数据类型更改分号之间的日期，

例如：＆＃39; 2016-01-01 00：00：00＆＃39;

Answer 4

- 试试这段代码。它更快

WITH cte_timesheet AS (
  select employee_id,
         MAX(CASE WHEN status IN (0,40) THEN 1 ELSE 0 END) include_status
     from em_timesheet
     where start_date = '2016-12-05'
       AND end_date = '2016-12-11'
    GROUP BY employee_id
)
SELECT emp_number,
       empname
  FROM em_employee e
    LEFT JOIN cte_timesheet t ON t.employee_id = e.emp_number
  WHERE t.employee_id IS NULL
     OR t.include_status = 1

Answer 5

尝试以下代码。非常简单

select * from #emp E
LEFT JOIN #TimeSheet T ON t.emp_nbr=e.emp_nbr
where startdate>='2016-01-01' and enddate<='2016-01-07'
and status_ in(0,40)

如何从其他表中缺少的一个表中选择记录

5 个答案: