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

Teradata Vantage™ - Advanced SQL Engine分析関数

Product
Advanced SQL Engine
Teradata Database
Release Number
17.10
Release Date
2021年7月
Content Type
プログラミング リファレンス
Publication ID
B035-1206-171K-JPN
Language
日本語 (日本)

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

sessionid path
1 [home, home]
1 [home, home]
1 [home, home]
1 [home, home]
1 [home, home]
1 [home, home]
1 [home, home]
1 [home, home]
1 [checkout, home]
1 [page1, checkout]
1 [home1, page1]
1 [home, home1]
1 [home, home]
1 [home, home]
1 [page1, home]
1 [home1, page1]
1 [home, home1]
1 [page1, home]
1 [home1, page1]
1 [home, home1]
2 [home, home]
2 [checkout, home]
2 [checkout, checkout]
..。 ..。