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
Published
2021年7月
Language
日本語
Last Update
2021-09-23
dita:mapPath
ja-JP/wnd1589838592459.ditamap
dita:ditavalPath
ja-JP/ayr1485454803741.ditaval
dita:id
jmh1512506877710

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]
..。 ..。