Question

是的，我有21000条记录，电子邮件地址末尾有数字（。+ 15位长号，例如：xyz@gmail.com.201211200200027）

现在，我能想到的最佳解决方案是：

Update TABLE
set EmailAddress = (
select substring (EmailAddress, 1, (len(EmailAddress) - 16))
from TABLE)
Where ISNUMERIC(RIGHT(Emailaddress, 15)) = 1

上面的代码不起作用（我不是T-SQL专家，请原谅我，如果这段代码看起来很蠢）

如果我告诉该代码是特定的电子邮件地址，那么它是有效的。像这样：

Update TABLE
set EmailAddress = (
select substring (EmailAddress, 1, (len(EmailAddress) - 16))
from TABLE)
Where ISNUMERIC(RIGHT(Emailaddress, 15)) = 1
and Emailaddress is 'xyz@gmail.com.201211200200027'

那么，如何更新这些电子邮件地址并删除最后16个字符？

Answer 1

试试这个;

UPDATE yourTable
SET EmailAddress = LEFT(EmailAddress, LEN(EmailAddress) - 16 )
WHERE PATINDEX('%[^0-9]%', RIGHT(EmailAddress, 15)) = 0 AND LEN(EmailAddress) > 16

T-SQL删除电子邮件地址末尾的数字

1 个答案: