listagg - 按列分組的多個組

Question

我使用的是帶有許多列的LISTAGG。

所以我必須做GROUP BY所有這些列。

有沒有更簡單的方法來做到這一點？

像'所有減去listagg ...'的組？

Answer 1

您是否有示例表？你在加入桌子嗎？本示例使用連接，但LISTAGG列不在group by語句中。

下面是我編輯另一個問題的例子。

SQL Fiddle

SELECT c.id, 
    c.model, 
    LISTAGG(d.name, ',') 
    within GROUP (ORDER BY d.name) AS "Drivers", 
    LISTAGG(c.color, ',') 
    within GROUP (ORDER BY c.color) AS "Colors" 
FROM TBLCARS c 
    join TBLDRIVERS d 
    ON c.id = d.fid_tblcars 
GROUP BY c.id, 
     c.model 
ORDER BY c.id 

下面是一個使用WITH子句，以及你使用CTE，並建立一個大的查詢。

WITH cte 
AS (SELECT c.id, 
      LISTAGG(c.color, ',') 
       within GROUP (ORDER BY c.color) AS "Colors", 
      LISTAGG(c.model, ',') 
       within GROUP (ORDER BY c.model) AS "Model", 
      LISTAGG(d.name, ',') 
       within GROUP (ORDER BY d.name) AS "Name" 
    FROM TBLCARS c 
      join TBLDRIVERS d 
       ON c.id = d.fid_tblcars 
    GROUP BY c.id) 
SELECT * 
FROM cte 

SQL FIDDLE WITH