listagg - 按列分组的多个组

Question

我使用的是带有许多列的LISTAGG。

所以我必须做GROUP BY所有这些列。

有没有更简单的方法来做到这一点？

像'所有减去listagg ...'的组？

Answer 1

您是否有示例表？你在加入桌子吗？本示例使用连接，但LISTAGG列不在group by语句中。

下面是我编辑另一个问题的例子。

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 

下面是一个使用WITH子句，以及你使用CTE，并建立一个大的查询。

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