Question

我的SQL查询（在Oracle 11g中）返回如下列：

31132,11100,44232
25464,89453,15686
21561,68547,51612

我想订购这些细胞，我的意思是：

11100,31132,44232
15686,25464,89453
21561,51612,68547

我该怎么做？

提前致谢！

Answer 1

您可以使用REGEXP_SUBSTR从每行中提取单个数字，然后使用LISTAGG以所需顺序重新加入它们 - 如下所示：

WITH 
  T (N) AS --TEST DATA
    (SELECT '31132,11100,44232' FROM DUAL
    UNION
    SELECT '25464,89453,15686' FROM DUAL
    UNION
    SELECT '21561,68547,51612' FROM DUAL),
  T1 (N1) AS --USE THIS BELOW TO SEPARATE OUT FIRST/SECOND/THIRD VALUE FROM EACH ROW
    (SELECT 1 FROM DUAL UNION SELECT 2 FROM DUAL UNION SELECT 3 FROM DUAL),
  SEPARATED (RN,N) AS 
    (SELECT RN,REGEXP_SUBSTR(N,'[^,]+',1,T1.N1) N FROM --GET THE VALUES FROM EACH ROW WITH AN ACCOMPANYING ROW NUMBER SO WE CAN REGROUP THEM BELOW
      (SELECT ROW_NUMBER() OVER(ORDER BY 1) RN ,N FROM T),T1)
SELECT LISTAGG(N,',') WITHIN GROUP (ORDER BY N) FROM SEPARATED GROUP BY RN; --USE LISTAGG TO REJOIN THE SEPARATED VALUES IN THE DESIRED ORDER

Oracle SQL：使用分隔字符串排序行

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