如何有效地在SQL代码中使用联接和数据透视

Question

我有3张桌子。 该查询仅返回记录的排序即可返回所需的结果。 我添加了“排序依据”，但是没有用。

结果应为：

我得到的结果只是记录的排序。 我想按ID排序，但是不起作用。

查询：

WITH NAMES AS (

   SELECT

      P.NAMES,
      P.CODE,
      Q.NUM_TYP,
      Q.PHONE_NUM
   FROM
      dbo.NAMES P

      INNER JOIN dbo.PHONE Q 
         ON P.ID = Q.ID
      LEFT JOIN DBO.ADDRESS S
         ON P.PRSN_IK = S.PRSN_IK
      WHERE S.ADDR Is Null  

)

SELECT *    
FROM
NAMES    
PIVOT (Max(PHONE_NUM) FOR NUM_TYP IN (WORK, HOME)) R;

感谢任何输入。 谢谢。

Answer 1

试试trhis：

select f1.Name, nullif(f1.code, '') Code ,
isnull(f2.phone_num, 'N/A') work_phone_num, isnull(f3.phone_num, 'N/A') home_phone_num
from Names f1
left outer join Phone f2 on f1.id=f2.id and f2.Num_type='WORK'
left outer join Adress f2b on f2.id=f2b.id and f2.num_type=f2b.add_type
left outer join Phone f3 on f1.id=f3.id and f3.Num_type='HOME'
left outer join Adress f3b on f3.id=f3b.id and f3.num_type=f3b.add_type
where f2b.id is null or f3b.id is null

Answer 2

鉴于您的查询正在工作，这应该工作：

;WITH NAMES AS (
SELECT
  P.NAMES,
  P.CODE,
  Q.NUM_TYP,
  Q.PHONE_NUM
FROM dbo.NAMES P
  INNER JOIN dbo.PHONE Q 
     ON P.ID = Q.ID
  LEFT JOIN DBO.ADDRESS S
     ON P.PRSN_IK = S.PRSN_IK
  WHERE S.ADDR Is Null  
), PIVOTED 
AS
(
 SELECT *
 FROM NAMES
 PIVOT (Max(PHONE_NUM) FOR NUM_TYP IN (WORK, HOME)) R
)
SELECT * FROM PIVOTED piv
inner join [dbo].[NAMES] nam
on piv.names = nam.names
ORDER BY nam.ID

我已包含P.ID，并将所有内容包装在子查询下。