SQL將列的一部分複製到新列中

Question

我已經繼承了設置不佳的數據源。鑑於目前的數據結構：

 
PreAddress           City County 
12312 Osprey Drive NW Gig Harbor     NULL NULL 
12312 Osprey Drive NW Gig Harbor     NULL NULL 
3022 SW Bradford St Seattle       NULL NULL 
3022 SW Bradford St Seattle       NULL NULL 
4605 Prestwick Lane SE Olympia      NULL NULL 
921 129th Street Court East Tacoma Auburn/Pierce NULL NULL 

我需要拆掉的城市名稱了前置地址欄，並在市列傾倒，所以它看起來像：

 
PreAddress           City     County 
12312 Osprey Drive NW        Gig Harbor    NULL 
12312 Osprey Drive NW        Gig Harbor    NULL 
3022 SW Bradford St         Seattle     NULL 
3022 SW Bradford St         Seattle     NULL 
4605 Prestwick Lane SE        Olympia     NULL 
921 129th Street Court East       Tacoma Auburn/Pierce NULL 

任何SQL大師那裏有什麼想法如何腳本？

UPDATE

首次通過SQL：

USE [SMS] 
GO 

IF OBJECT_ID('tempdb..#tmpCitiesCounties') IS NOT NULL 
    DROP TABLE #tmpCitiesCounties 
GO 

IF OBJECT_ID('tempdb..#tmpCityCleanup') IS NOT NULL 
    DROP TABLE #tmpCityCleanup 
GO 

CREATE TABLE #tmpCitiesCounties 
    ([ccId] INT IDENTITY(1, 1) 
       PRIMARY KEY 
    , [City] VARCHAR(50) NOT NULL 
    , [County] VARCHAR(50) NOT NULL); 

CREATE TABLE #tmpCityCleanup 
    ([Id] INT NULL 
    , [Address] VARCHAR(64) NULL 
    , [City] VARCHAR(50) NULL 
    , [County] VARCHAR(50) NULL); 

INSERT INTO [#tmpCitiesCounties] 
     ([City], [County]) 
VALUES ('Battle Ground', 'Clark'), 
     ('Camas', 'Clark'), 
     ('La Center', 'Clark'), 
     ('Ridgefield', 'Clark'), 
     ('Vancouver', 'Clark'), 
     ('Washougal', 'Clark'), 
     ('Yacolt', 'Clark'), 
     ('Fircrest', 'Pierce'), 
     ('Gig Harbor', 'Pierce'), 
     ('Unincorporated', 'Skagit'), 
     ('Arlington', 'Snohomish'), 
     ('Bothell/Snohomish', 'Snohomish'); 

INSERT INTO [#tmpCityCleanup] 
     SELECT [SNPR].[Id] 
       , REPLACE(LOWER([SNPR].[PreAddress]), LOWER([TCC].[City]), '') AS [Address After] 
       , [TCC].[City] 
       , [TCC].[County] 
     FROM [dbo].[SellerNetProceedsResult] AS SNPR 
       LEFT JOIN [#tmpCitiesCounties] AS TCC 
        ON [TCC].[City] = RIGHT(LOWER([SNPR].[PreAddress]), LEN(LOWER([TCC].[City]))) 
     ORDER BY [SNPR].[Id] DESC 

SELECT [TCC1].[Id] 
     , [TCC1].[Address] 
     , [TCC1].[City] 
     , [TCC1].[County] 
FROM [#tmpCityCleanup] AS TCC1 

所以，這個塊SQL的正確眼淚的東西出來（市，縣的該臨時表將被截斷，因爲有超過了很多我想寫在這篇文章中），但正如上面那行有「Tacoma Auburn/Pierce」的行一樣，上面的SQL在刪除「Auburn/Pierce」後留下了「Tacoma」。

如果我再運行下面的SQL代碼，我得到的地址在兩個表之間不承認：

SELECT [TCC1].* 
     , REPLACE([TCC1].[Address], [TCC2].City, '') AS [Address After] 
     --, [TCC2].[City] 
     --, RIGHT([TCC1].[Address], LEN([TCC2].[City])) 
FROM [#tmpCityCleanup] AS TCC1 
     left JOIN [#tmpCitiesCounties] AS TCC2 
      ON [TCC2].[City] = RIGHT([TCC1].[Address], LEN([TCC2].[City])) 

相反，「地址後」一欄是空只。

 
Id  PreAddress        City   CountyAddress After 
151  12312 osprey drive nw Gig Harbor  Algona   King NULL 
150  12312 osprey drive nw     Gig Harbor  Pierce NULL 

也許我錯過了一些東西。

Answer 1

你需要有一個可能的表名稱查找表。關閉我的頭頂，也許是這樣的：

UPDATE Address SET 
    PreAddress=Replace(a.PreAddress,b.City,''), 
    City=b.City 
FROM Address a INNER JOIN Cities b ON b.City=RIGHT(a.PreAddress,LEN(b.city)) 

Answer 2

如果是這樣，而不是常規的固定式，用於替代一次過更新SQL您使用批處理地理編碼服務，將格式的地址的，你可以將它們加載回表格中。你會得到這樣的協調:)。

Answer 3

可能，這將工作

DECLARE @Tbl TABLE (
     Adress VARCHAR(100), 
     City VARCHAR(100), 
     County VARCHAR(1) 
    ) 

    INSERT INTO @Tbl VALUES ('12312 Osprey Drive NW Gig Harbor',NULL, NULL) 
    INSERT INTO @Tbl VALUES ('12312 Osprey Drive NW Gig Harbor', NULL, NULL) 
    INSERT INTO @Tbl VALUES ('3022 SW Bradford St Seattle', NULL, NULL) 
    INSERT INTO @Tbl VALUES ('3022 SW Bradford St Seattle', NULL, NULL) 

    --Before Update 
    SELECT LEFT(Adress, NULLIF(LEN(Adress)-7,-5)), REVERSE(SUBSTRING(REVERSE(Adress),1,CHARINDEX(' ',REVERSE(Adress))-1)),County FROM @Tbl 
    --Something like this is what you need 
    UPDATE @Tbl 
    SET Adress = t.Adress, 
     City = t.city, 
     County = t.county 
    FROM @Tbl t 
    WHERE t.Adress = Adress 
    AND t.City = City