如何将pyspark.sql.dataframe.DataFrame转换回databricks笔记本中的sql表

Question

I created a dataframe of type pyspark.sql.dataframe.DataFrame by executing the following line: dataframe = sqlContext.sql("select * from my_data_table")

How can I convert this back to a sparksql table that I can run sql queries on?

Answer 1

You can create your table by using createReplaceTempView . In your case it would be like:

dataframe.createOrReplaceTempView("mytable")

After this you can query your mytable using SQL .

If your a spark version is ≤ 1.6.2 you can use registerTempTable