Question

I apologize for asking a very vague question but here it is.
I have to write a SQL query in SQL Server as follows.
I have a table say tblA having 10 columns from col1, col2,…..col10.
Each column is not null and definitely holds some value and all of type int.
The query should be to select all such records in which at least 4 columns are matching with given filter criteria, where the filter criteria has values for all 10 columns.

I googled dint get a clue. It needs to be done in SQL server and single query.
Please suggest.

Thanks in advance.

Answer 1

SELECT *
FROM
    yourtable
WHERE
    case col1 when @value1 then 1 else 0 end +
    case col2 when @value2 then 1 else 0 end +    
    ...
    case col10 when @value10 then 1 else 0 end 

    >=4