Question

我有一个地址列，邮政编码中的值为+。但是+可以在列中的任何地方（街道名称，城市），但是我只需要用另一个称为Postal_Code的列来标识地址中的邮政编码，然后删除+。

要在邮政编码中识别+和删除但不知道该怎么办？

我已经从+列中删除了Postal_Code。

表格示例

POSTAL_CODE             FORMATTED_ADDRESS
T2E 8N6                 #6, 1435-40th Ave NE #6 Calgary AB  T2E+8N6 Canada
23401                   9 Abolaji Street Mafoluku +23401 Oshodi Lagos State Nigeria
234-01                  6 Force Road, Square Race Course +234-01 Lagos, Nigeria Lagos State
86 163453               Daqing Oilfield Co.Ltd Ranghulu 86+163453 Daqing CHN

Answer 1

这在MS SQL Server中似乎很难。
（使用regexp_replace函数会容易得多...）

反正......

示例片段：

declare @YourTable table (POSTAL_CODE varchar(30), FORMATTED_ADDRESS varchar(1000));

insert into @YourTable (POSTAL_CODE, FORMATTED_ADDRESS) values
('T2E 8N6','#6, 1435-40th Ave NE #6 Calgary AB  T2E+8N6 Canada'),
('23401', '9 Abolaji Street Mafoluku +23401 Oshodi Lagos State Nigeria'),
('234-01', '6 Force Road, Square Race Course +234-01 Lagos, Nigeria Lagos State'),
('86 163453', 'Daqing Oilfield Co.Ltd Ranghulu 86+163453 Daqing CHN'),
(NULL, 'foo +1234 bar'),
('12345', 'bar 12345+ baz');

UPDATE @YourTable
SET FORMATTED_ADDRESS = 
    REPLACE(
       REPLACE(
          REPLACE(FORMATTED_ADDRESS, 
             '+'+POSTAL_CODE, POSTAL_CODE),
             POSTAL_CODE+'+', POSTAL_CODE),
             REPLACE(POSTAL_CODE,' ','+'), POSTAL_CODE)
WHERE POSTAL_CODE IS NOT NULL
AND (
     FORMATTED_ADDRESS LIKE CONCAT('%+', POSTAL_CODE, '%') OR
     FORMATTED_ADDRESS LIKE CONCAT('%', POSTAL_CODE, '+%') OR
     (POSTAL_CODE LIKE '%[ ]%' AND FORMATTED_ADDRESS LIKE CONCAT('%', REPLACE(POSTAL_CODE,' ','+'), '%'))
);


SELECT * FROM @YourTable;

Answer 2

这可以通过一些REPLACE语句来完成：

UPDATE YourTable
SET FORMATTED_ADDRESS = REPLACE(
        REPLACE(FORMATTED_ADDRESS, REPLACE(POSTAL_CODE, ' ', '+'), POSTAL_CODE), 
        '+'+POSTAL_CODE, 
        POSTAL_CODE)
FROM YourTable

您可以先SELECT来测试此查询的结果：

SELECT REPLACE(
        REPLACE(FORMATTED_ADDRESS, REPLACE(POSTAL_CODE, ' ', '+'), POSTAL_CODE), 
        '+'+POSTAL_CODE, 
        POSTAL_CODE) AS NEW_FORMATTED_ADDRESS,
        FORMATTED_ADDRESS
FROM YourTable

SQL查询：更新列中与另一个列值匹配的子字符串

2 个答案: