Please I'm a beginner in using R and I work on database.
I have a database that contain lot of columns and lines, like this for example
Column1 Column2 5 T1 1 T2 1 T3 1 T1 2 T1 1 T1 2 T1 1 T1
I want to extract just lines that have the value 1 in column 1 and Value T1 in Column 2
So the result I want is
Column1 Column2 1 T1 1 T1 1 T1
Can you tell me please how I can do that
Thank you very much