There is a column with many duplicate values, I want to filter out all duplicate values but still keeping a single value among the duplicates. For eg -If my column has
[a,b,a,a,a,b,c,c,d]
then I want result to be like -
[a,b,c,d].
How can I do this?
UPATE - I don't want to remove all duplicates , I want to get one value of each duplicate.