当列数未知时，如何在多个列上连接两个表(pyspark)

from pyspark.sql import SparkSession

# 创建SparkSession
spark = SparkSession.builder.getOrCreate()

# 读取两个表的数据
table1 = spark.read.table("table1")
table2 = spark.read.table("table2")

# 获取两个表的列名列表
table1_columns = table1.columns
table2_columns = table2.columns

# 生成join条件
join_conditions = []
for column1, column2 in zip(table1_columns, table2_columns):
    join_conditions.append(table1[column1] == table2[column2])

# 执行join操作
joined_table = table1.join(table2, on=join_conditions, how="inner")

# 显示结果
joined_table.show()