join dataframes python code example
Example 1: join on column pandas
df1.merge(df2,on='columnName',how='left')
Example 2: pandas left join
df.merge(df2, left_on = "doc_id", right_on = "doc_num", how = "left")
Example 3: joins in pandas
pd.merge(product,customer,left_on='Product_name',right_on='Purchased_Product')
Example 4: joins in pandas
pd.merge(product,customer,on='Product_ID')
Example 5: join to dataframes pandas
>>> df.join(other.set_index('key'), on='key')
key A B
0 K0 A0 B0
1 K1 A1 B1
2 K2 A2 B2
3 K3 A3 NaN
4 K4 A4 NaN
5 K5 A5 NaN
Example 6: join tables pandas
In [88]: result = left.join(right, how='inner')