Question

我使用LISTAGG列了很多列。

所以我必须GROUP BY所有这些列。

有更简洁的方法吗？

喜欢＆＃39;按所有减去listagg分组...＆＃39; ？

Answer 1

你有一个示例表吗？你在加桌子吗？此示例使用连接，但LISTAGG列不在group by语句中。

以下是我编写的另一个问题的例子。

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

这里使用WITH子句也可以使用CTE并构建更大的查询。

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

listagg - 按列分组

1 个答案: