Php Mysql内部连接查询

我是Mysql查询新手

我有两张桌子tbl1，tbl2

我需要以开始时间升序连接两个表，并过滤日期和emp\u id

这里的表格字段是不同的开始时间->进入时间，结束时间->离开时间

tbl-1:

id      start-time      end-time        date            emp_id

1       09:00:00        09:00:59        2014-05-14        1

2       10:00:00        10:00:59        2014-05-14        1

3       12:00:00        12:00:59        2014-05-14        1

4       14:00:00        14:00:59        2014-05-14        1

5       16:00:00        17:00:59        2014-05-13        1


tbl-2:

id      in-time         out-time        date            emp_id

1       11:00:00        11:00:59        2014-05-14        1

2       13:00:00        13:00:59        2014-05-14        1

3       15:00:00        15:00:59        2014-05-14        1

4       18:00:00        19:00:59        2014-05-14        2

5       20:00:00        20:00:59        2014-05-15        1


filterd by date, emp_id ordered by date

result-tbl:

id      start-time      end-time        date            emp_id

1       09:00:00        09:00:59        2014-05-14        1

2       10:00:00        10:00:59        2014-05-14        1

3       11:00:00        11:00:59        2014-05-14        1

4       12:00:00        12:00:59        2014-05-14        1

5       13:00:00        13:00:59        2014-05-14        1

6       14:00:00        14:00:59        2014-05-14        1

7       15:00:00        15:00:59        2014-05-14        1

---

我想你不想加入。我认为您需要一个联合以及一个重新分配ID的方法。比如：

select (@rn := @rn + 1) as id, intime as starttime, outtime as outtime, emp_id
from ((select * from tbl1)
      union all
      (select * from tbl2)
     ) t cross join
     (select @rn := 0) var
where emp_id = 1 and
      intime <= '18:00:00'
order by intime;

---

你想有一个联合的记录吗

select in_time, out_time, date, emp_id from tbl1
union all
select star_time, end_time, date, emp_id from tbl2
order by in_time, out_time, date, emp_id;

编辑：加上过滤器：

select in_time, out_time, date, emp_id from tbl1
where emp_id = 1 and date = '2014-05-14'
union all
select star_time, end_time, date, emp_id from tbl2
where emp_id = 1 and date = '2014-05-14'
order by in_time, out_time;

---

这可能会解决你的问题

select *
from (
        select id,star_time,end_time,date,emp_id
        from tbl1
        where [date-filter-condition]
        union all
        select id,in_time as star_time,out_time end_time,date,emp_id
        from tbl2
        where [date-filter-condition]
) tmp
where tmp.date==[some-date-filter] and tmp.emp_id=[some-emp-id-filter]
order by tmp.date