从SQL比较中排除隐藏字符

Question

I want to search within a column where some rows has hidden characters. When I use = operator there is no result:

SELECT * 
FROM result 
WHERE destination = 'x'

and when I use like operator the result are more than what I expect in = operator.

SELECT * 
FROM result 
WHERE destination LIKE '%x%'

I guess the reason that = operator has no result is because I have originally converted an Excel file to a Microsoft Access .MDB database file and there are some hidden characters in data columns (I have no idea what are those hidden characters).

How can I exclude all hidden characters from columns when I compare them to x? is there a complete list of hidden characters so I can use replace function?

Answer 1

If the hidden characters are whitespace, you should be able to use something like

Trim(destination) ='x'

However what you most certainly should do is fix the data so no hidden chars are there, else you would run into all kinds of unexpected problems later on.