nPath範囲一致例: OVERLAPPINGモードの使用 - Advanced SQL Engine - Teradata Database

入力

入力テーブルは、LAG式とLEAD式の例: 入力問合わせの別名なしによるaggregate_clicksです。

SQL-MapReduce呼び出し

SELECT * FROM nPath (
  ON aggregate_clicks PARTITION BY sessionid ORDER BY clicktime
  USING
  Mode (OVERLAPPING)
  Pattern ('A.A')
  Symbols (TRUE AS A)
  Result (
    FIRST (sessionid OF A) AS sessionid,
    ACCUMULATE (pagetype OF A) AS path
  )
) AS dt ORDER BY dt.sessionid;

nPath範囲一致例の出力