我正在使用SQL Server Studio管理。以下是我遇到的問題。連續連接記錄（名稱）以創建電子郵件地址
表名：市民
Firstname Lastname Email
John Smith [email protected]
Andrew Evans [email protected]
我想改變的電子郵件地址，這兩個記錄採用格式
[email protected] [email protected]。 gov.uk
想要的結果：
Firstname Lastname Email
John Smith [email protected]
Andrew Evans [email protected]
所以它會是一個名字和姓氏的連接，在它們之間有一個點，並加上@ ipno.gov.uk
我真的很感謝你的幫助或指導。
我假設你要更新整個表。試試這個簡單的方法，
Lower（） - >將大寫字母（如果有）轉換爲小寫。
UPDATE Citizens
SET Email = Lower(FirstName) + '.' + Lower(LastName) + '@ipno.gov.uk'
UPDATE Citizens SET Email = LOWER(FirstName) + '.' + LOWER(LastName) + '@ipno.gov.uk' WHERE FirstName IN ('John', 'Andrew') AND LastName IN ('Smith', 'Evans')
一些解釋可能會有幫助 - 僅限代碼的答案是不鼓勵的。 – Eiko
對於SQL Server 2012+，你可以使用使用CONCAT
CONCAT(LOWER(FirstName), '.', LOWER(LastName), '@ipno.gov.uk')
樣品執行與給定的數據：
DECLARE @Citizens TABLE (FirstName VARCHAR (100), LastName VARCHAR (100), Email VARCHAR (100));
INSERT INTO @Citizens (FirstName, LastName, Email) VALUES
('John', 'Smith', '[email protected]'),
('Andrew', 'Evans', '[email protected]');
-- Only to update the two records need to add the WHERE clause
-- If you want to update for all the entries in the table remove the WHERE clause
UPDATE @Citizens SET Email = CONCAT(LOWER(FirstName), '.', LOWER(LastName), '@ipno.gov.uk')
FROM @Citizens
WHERE FirstName = 'John' AND LastName = 'Smith'
UPDATE @Citizens SET Email = CONCAT(LOWER(FirstName), '.', LOWER(LastName), '@ipno.gov.uk')
FROM @Citizens
WHERE FirstName = 'Andrew' AND LastName = 'Evans'
感謝這....爲什麼你使用DECLARE命令..我是新來的SQL，不知道我明白它的使用 – optimisteve
謝謝SOOOOO多！ – optimisteve