Peewee + sqlite可以做一個遞歸的CTE查詢嗎？

Question

Peewee可以執行以下recursive CTE query嗎？

該代碼創建表示樹結構的自引用表，查詢查找一個元素的所有父項。 （我是一名SQL初學者，歡迎提供任何改進建議）。

CREATE TABLE Parts ( 
    Id  INTEGER PRIMARY KEY, 
    Desc  TEXT, 
    ParentId INTEGER 
); 

INSERT INTO Parts VALUES (1, 'CEO',     NULL); 
INSERT INTO Parts VALUES (2, 'VIP Sales',   1); 
INSERT INTO Parts VALUES (3, 'VIP Operations',  1); 
INSERT INTO Parts VALUES (4, 'Sales Manager Europe', 2); 
INSERT INTO Parts VALUES (5, 'Sales Manager USA', 2); 
INSERT INTO Parts VALUES (6, 'Sales Rep Europe 1', 4); 
INSERT INTO Parts VALUES (7, 'Sales Rep Europe 2', 4); 
INSERT INTO Parts VALUES (8, 'Sales Rep USA 1',  5); 
INSERT INTO Parts VALUES (9, 'Sales Rep USA 2',  5); 

WITH RECURSIVE Cte (
    Level, 
    Id, 
    Desc, 
    ParentId, 
    ParentDesc 
) AS (
    SELECT 0, 
      Child.Id, 
      Child.Desc, 
      Parent.Id, 
      Parent.Desc 
     FROM Parts AS Child 
      JOIN Parts AS Parent ON Child.ParentId = Parent.Id 
    WHERE Child.Desc = 'Sales Rep USA 1' 

    UNION ALL 

    SELECT Cte.Level + 1, 
      Child.Id, 
      Child.Desc, 
      Parent.Id, 
      Parent.Desc 
     FROM Parts as Child, Cte 
      JOIN Parts AS Parent ON Child.ParentId = Parent.Id 
    WHERE Child.Id = Cte.ParentId 
) 
SELECT * FROM Cte; 

Answer 1

Peewee沒有任何用於構建遞歸查詢的內置工具。雖然有可能使用一些SQL的積木類，破解它在一起，你老老實實可能會更好過只是路過整個SQL查詢到peewee的raw()方法：

http://docs.peewee-orm.com/en/latest/peewee/api.html#Model.raw