How to add column to dataframe spark

- How to add new column to dataframe spark
- How to add a column to spark dataframe in python
- How to add empty column to spark dataframe
- How to add new column to dataframe in spark scala
- How to add new column to existing spark dataframe
- Add column to dataframe spark scala
- How to add index column in spark dataframe
- How to add column names to spark dataframe
- Add column to dataframe spark sql