SQL簡單的加入，我難倒

我有列的表格：SQL簡單的加入，我難倒

JOB_NUM, HM_PH, BUS_PH, CALL1ST

凡job_num是唯一編號

而且HM_PH，BUS_PH和CALL1ST列10個電話號碼

因此，使用上面列的順序，樣本數據看起來像：

JOB_NUM, HM_PH,  BUS_PH,  CALL1ST 
------------------------------------ 
12345, 4025557848, 9165897588, 7518884455 
10101, 8887776655, 8667416895, 5558884446

我想要生產的是2列。

JOB_NUM, PHONE

凡job_num旁邊列出的每個電話號碼，如：

JOB_NUM PHONE 
--------------------- 
12345 4025557848 
12345 9165897588 
12345 7518884455 
10101 8887776655 
10101 8667416895 
10101 5558884446

從哪裏開始？

來源

2010-07-30 CodingIsAwesome

@OMG我很高興，我雙下降我的修訂權在你的頂部前檢查。 ;） – ahsteele 2010-07-30 18:45:01

@ahsteele：無論如何都有修訂，你總是可以回滾;） – Tim 2010-07-30 19:26:10

你需要一個UNION（如果你想刪除重複的行）或UNION ALL（如果你想保留重複行）：

SELECT JOB_NUM, HM_PH AS PHONE FROM yourtable 
UNION 
SELECT JOB_NUM, BUS_PH FROM yourtable 
UNION 
SELECT JOB_NUM, CALL1ST FROM yourtable 
ORDER BY JOB_NUM

來源

2010-07-30 18:40:33

+1 - 添加一個「ORDER BY JOB_NUM」到最後。 – JNK 2010-07-30 18:41:40

@CodingIsAwesome：請注意'UNION'會刪除重複項; '聯盟所有'不會，而且會更快。 – 2010-07-30 18:44:19

@OMG小馬：+1好點。添加。 @JNK：修正了，謝謝。 – 2010-07-30 18:53:34

做一個UNION ALL你所需要的所有號碼（含重複）或UNION當你需要的唯一行：

select JOB_NUM,HM_PH AS PHONE 
from YourTableName 
union all 
select JOB_NUM,BUS_PH AS PHONE 
from YourTableName 
union all 
select JOB_NUM,CALL1ST_PH AS PHONE 
from YourTableName

來源

2010-07-30 18:43:23 Tim

create table yourtable 
(
    id int, 
    HM_PH nvarchar(10), 
    BUS_PH nvarchar(10), 
    CALL1ST nvarchar(10) 
) 


insert into yourtable 
select 12345, 4025557848, 9165897588, 7518884455 
union 
select 10101, 8887776655, 8667416895, 5558884446 



select * from yourtable 

select ID,p.Phone 
from temptemp 
unpivot(Phone for phoneCol in (HM_PH,BUS_PH,CALL1ST)) p 
order by id 

drop table yourtable

來源

2010-07-30 19:03:30

SQL簡單的加入，我難倒

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