Answers for "pd merge two dataframes"

merge two dataframes based on column

df_outer = pd.merge(df1, df2, on='id', how='outer') #here id is common column

df_outer

combining 2 dataframes pandas

df_3 = pd.concat([df_1, df_2])

pandas left join

df.merge(df2, left_on = "doc_id", right_on = "doc_num", how = "left")

how to merge two dataframes

df_merge_col = pd.merge(df_row, df3, on='id')

df_merge_col

join tables pandas

In [99]: result = left.join(right, on=['key1', 'key2'], how='inner')

merge dataframe pandas

>>> df1.merge(df2, left_on='lkey', right_on='rkey')
  lkey  value_x rkey  value_y
0  foo        1  foo        5
1  foo        1  foo        8
2  foo        5  foo        5
3  foo        5  foo        8
4  bar        2  bar        6
5  baz        3  baz        7