我想要SQL / Teradata查询以下R-Code的任何帮助

Question

我想为以下R代码编写SQL/ Teradata查询。我为您的反思附加了R代码。

SELECT `ID`, `Date`, `Agent`, `group`
FROM (
  SELECT
    *,
    RANK() OVER (PARTITION BY `ID`, `group`, `Agent` ORDER BY `Date`) AS `q01`
  FROM (
    SELECT
      *,
      CEIL(CAST(difftime(`Date`, MIN(`Date`) OVER (PARTITION BY `ID`), 'week' AS `units`) / 4.0 AS INTEGER)) AS `group`
    FROM (
      SELECT `ID`, CAST(`Date` AS DATE) AS `Date`, `Agent`
      FROM `dbplyr_003`
    )
  )
)
WHERE (`q01` <= 1)
Thanks