SQL-MapReduce Call - Aster Analytics

CREATE fact TABLE tfidf_output1 DISTRIBUTE BY HASH(term) AS
  SELECT * FROM tf_idf (
    ON TF (
      ON tfidf_input1 PARTITION BY docid
    ) AS tf PARTITION BY term
    ON (SELECT COUNT (DISTINCT docid) FROM tfidf_input1
    ) AS doccount DIMENSION
  );