相关疑难解决方法(0)

我有一个名为df的数据框,名为employee_id.我在做:

 df.registerTempTable("d_f")
val query = """SELECT *, ROW_NUMBER() OVER (ORDER BY employee_id) row_number FROM d_f"""
val result = Spark.getSqlContext().sql(query)

但是得到以下问题.有帮助吗？

[1.29] failure: ``union'' expected but `(' found
SELECT *, ROW_NUMBER() OVER (ORDER BY employee_id) row_number FROM d_f
                            ^
java.lang.RuntimeException: [1.29] failure: ``union'' expected but `(' found
SELECT *, ROW_NUMBER() OVER (ORDER BY employee_id) row_number FROM d_f