Question

I would like to check if the particular db column has one or more of the following characters depending on the condition. I guess there is no api/function in the SQL Server like hasNumericChar() etc. right ? How can we check it ?

1. mixed case (considering sql queries are not case sensitive how can we do this ? )
2. special_chars
3. Numeric

Answer 1

Finding rows where a particular column only contains digits:

SELECT * FROM table WHERE NOT column like '%[^0-9]%'

Mixed case is going to be tricier:

SELECT * FROM table WHERE column like '%[abcdefghijklmnopqrstuvwxyz]%' collate Latin1_General_CS_AS AND
                          column like '%[ABCDEFGHIJKLMNOPQRSTUVWXYZ]%' collate Latin1_General_CS_AS

(Unfortunately, you can’t use ranges, like [a-z], since that expands to aAbBcC)

What are the special characters?