merge 2 pandas code example

Example 1: pandas left join

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

Example 2: how to merge two dataframes

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

df_merge_col

Example 3: merge two df

bigdata = pd.concat([data1, data2], ignore_index=True, sort=False)