[英]Can I use a between statement for a range of characters in SQL?
My current code works and highlights email addresses with illegal (&hidden) characters that go to downstream systems and break them.我当前的代码工作并突出显示带有非法(&隐藏)字符的电子邮件地址,这些字符会进入下游系统并破坏它们。 Question is can make the statment more efficient and say search for any character between CHAR(1) and CHAR(31) rather than listing each line out ?
问题是可以使语句更有效,并说搜索 CHAR(1) 和 CHAR(31) 之间的任何字符而不是列出每一行?
SELECT * FROM [Table1].[customer]
where
EMAIL_ADDR like '%'+CHAR(1) +'%' or
EMAIL_ADDR like '%'+CHAR(2) +'%' or
EMAIL_ADDR like '%'+CHAR(3) +'%' or
EMAIL_ADDR like '%'+CHAR(4) +'%' or
EMAIL_ADDR like '%'+CHAR(5) +'%' or
EMAIL_ADDR like '%'+CHAR(6) +'%' or
EMAIL_ADDR like '%'+CHAR(7) +'%' or
EMAIL_ADDR like '%'+CHAR(8) +'%' or
EMAIL_ADDR like '%'+CHAR(9) +'%' or
EMAIL_ADDR like '%'+CHAR(10)+'%' or
EMAIL_ADDR like '%'+CHAR(11)+'%' or
EMAIL_ADDR like '%'+CHAR(12)+'%' or
EMAIL_ADDR like '%'+CHAR(13)+'%' or
EMAIL_ADDR like '%'+CHAR(14)+'%' or
EMAIL_ADDR like '%'+CHAR(15)+'%' or
EMAIL_ADDR like '%'+CHAR(16)+'%' or
EMAIL_ADDR like '%'+CHAR(17)+'%' or
EMAIL_ADDR like '%'+CHAR(18)+'%' or
EMAIL_ADDR like '%'+CHAR(19)+'%' or
EMAIL_ADDR like '%'+CHAR(20)+'%' or
EMAIL_ADDR like '%'+CHAR(21)+'%' or
EMAIL_ADDR like '%'+CHAR(22)+'%' or
EMAIL_ADDR like '%'+CHAR(23)+'%' or
EMAIL_ADDR like '%'+CHAR(24)+'%' or
EMAIL_ADDR like '%'+CHAR(25)+'%' or
EMAIL_ADDR like '%'+CHAR(26)+'%' or
EMAIL_ADDR like '%'+CHAR(27)+'%' or
EMAIL_ADDR like '%'+CHAR(28)+'%' or
EMAIL_ADDR like '%'+CHAR(29)+'%' or
EMAIL_ADDR like '%'+CHAR(30)+'%' or
EMAIL_ADDR like '%'+CHAR(31)+'%'
In SQL Server, you should be able to use a character class:在 SQL Server 中,您应该能够使用字符类:
where EMAIL_ADDR like '%[' + CHAR(1) + CHAR(2) + CHAR(3) + . . . ']%'
However, it is probably simpler to check for characters that are allowed:但是,检查允许的字符可能更简单:
where email_addr like '%[-a-zA-Z0-9_.@]%'
or whatever list of characters you are allowing.或您允许的任何字符列表。
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