Question

我的表有这样的记录：

    NAME    AE  BYTES_ALLOC MAXBYTES
---------------------------------------------------------
    SYSTEM  NO  10805575680 10805575680
    SYSTEM  YES 2147483648  10737418240
    CTXD    NO  52428800    52428800
    SYSAUX  YES 7228882944  10737418240
    OLAP    NO  104857600   104857600
    OWAPUB  NO  11534336    11534336
    AKTAR   NO  4294967296  4294967296
    PORTAL  NO  106954752   106954752
    TBS     NO  1073741824  1073741824
    ODM     NO  104857600   104857600

我只想在行上显示一个＆＃34;名称＆＃34;（唯一）值，如果yes列中有no和ae值，则{ {1}}列。正如你所看到的，有两个＆＃34;系统＆＃34;行上的值。我想要的是将name和bytes_alloc值相加并将其maxbytes值设为ae。如下所示：

yes

Answer 1

由于YES“大于”NO，您可以使用MAX()：

SELECT NAME, MAX(AE) AE, SUM(BYTES_ALLOC) BYTES_ALLOC, SUM(MAXBYTES) MAXBYTES
FTOM TABLE
GROUP BY NAME,

Answer 2

试试这个：

select name, ae, bytes_alloc, maxbytes  from 
(select name, 
 max (ae) over (partition by name order by name) ae, 
 sum(bytes_alloc) over (partition by name order by name) bytes_alloc,
 sum(maxbytes) over (partition by name order by name) maxbytes,
 row_number() over (partition by name order by name) rn
 from tbl) s
 where s.rn = 1

使用与特定案例不同的区别

2 个答案: