我能够使用selectExpr解决此问题.

I was able to solve this using selectExpr.

df.selectExpr('date_sub(date_col, day_col) as subtracted_dates')

如果要将列添加到原始DF，只需在表达式中添加*

If you want to append the column to the original DF, just add * to the expression

df.selectExpr('*', 'date_sub(date_col, day_col) as subtracted_dates')