Hi all, I have updated my DataFrames package from v0.22.5 to v1.1.1. I have a leftjoin function in my code that is no longer working as expected. The leftjoin function has changed order from the first dataframe. e.g. leftjoin(dataframe1, dataframe2, on =:column_header) Previous to updating my p…

The order is not preserved. This is listed in the docstring of leftjoin. You can sort after the join to get the preferred ordering.

Leftjoin order of dataframe

pdeffebach May 17, 2021, 1:15pm 4

yes it looks like a 1.0 breaking change. See here.

1 Like

Topic		Replies	Views
Keeping the previous key ordering when joining two dataframes New to Julia	1	593	April 7, 2017
DataFrames.leftjoin now working? leftjoin not defined General Usage	2	624	October 3, 2020
Strange behavior with dataframes in julia 1.6 General Usage dataframes	6	530	March 7, 2021
leftjoin(df_A,df_B, on = :Date) UndefVarError: leftjoin not defined New to Julia dataframes	17	714	August 21, 2021
Ways to order a `DataFrame` by mixed order? Data	2	574	March 17, 2019