Remove duplicate

Hello Dave,
If you want to remove duplicates based on only one column (ie column A in your example) there is no visual recipe solution as described in this post. I would use a python recipe with a code like this as Matt suggested, you only need to replace the "input_dataset", "my_key_colum" and "output_dataset" in the sample.

# -*- coding: utf-8 -*-
import dataiku
import pandas as pd

# Recipe inputs
df = dataiku.Dataset("input_dataset").get_dataframe()

df.drop_duplicates(subset=["my_key_colum"], inplace=True)
# or
# df.drop_duplicates(inplace=True)
# to use all columns to compare for duplicates

# Recipe outputs
out = dataiku.Dataset("output_dataset").write_with_schema(df)

If you want to remove duplicates based on all columns you can either use the Distinct visual recipe or the commented line in the above code sample.
Best,
Arnaud