检查字符串是否包含SQL中的重音字符？

Question

如果输入字符串包含任何重音字符,我想执行任务,否则在SQL中执行另一个任务.有没有办法在SQL中检查这个条件？

例如:

@myString1 = 'àéêöhello!'

IF(@myString1 contains any accented characters)
  Task1
ELSE
  Task2

Answer 1

SQL小提琴:http://sqlfiddle.com/#!6/9eecb7d/ 1607

declare @a nvarchar(32) = 'àéêöhello!'
declare @b nvarchar(32) = 'aeeohello!'

select case 
    when (cast(@a as varchar(32)) collate SQL_Latin1_General_Cp1251_CS_AS) = @a 
    then 0 
    else 1 
end HasSpecialChars

select case 
    when (cast(@b as varchar(32)) collate SQL_Latin1_General_Cp1251_CS_AS) = @b 
    then 0 
    else 1 
end HasSpecialChars

(基于此处的解决方案:如何删除字符串上的重音？)