我想创建一个名为“ min”的列，其最小值为“ Expense”和“ Salary”
有什么建议吗？谢谢！
sampleData = [("bob",124000,125000),("mark",100000,108000),("carl",200000,70000),("peter",5000,185000),("jon",124500,65000),("roman",2200,82000),("simon",900000,98000),("eric",140000,144000),("carlos",75000,75000),("henry",120000,110000)]
df = spark.createDataFrame(sampleData, schema=["Name","Expense","Salary"])
df.show()