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  • ORACLE 按照指定顺序排序输出某些字段

    摘自:

    https://www.cnblogs.com/nick-huang/p/4076273.html

    select * from (
        select 'Nick' as item from dual
        union all
        select 'Viki' as item from dual
        union all
        select 'Glen' as item from dual
        union all
        select 'Robin' as item from dual
        union all
        select 'Total' as item from dual
    ) pre_tab
    order by decode(item, 'Viki', 1, 'Glen', 2, 'Robin', 3, 'Nick', 4, 'Total', 99);

    另外,在Report开发中,常需要将Total放最后,其它项则按其它排序方式(一般按正常的升序),可看作同一列有两种排序方式,那么可以这样:

    select * from (
        select 'Nick' as item from dual
        union all
        select 'Viki' as item from dual
        union all
        select 'Glen' as item from dual
        union all
        select 'Robin' as item from dual
        union all
        select 'Total' as item from dual
    ) pre_tab
    order by decode(item, 'Total', 2, 1), item;

    附 一条: 添加字段,排序 可以这样(比如下面的 年份 nf)

    order by nf, decode(dq,'贵阳',1,'遵义',2,'六盘水',3,'安顺',4,'都匀',5,'凯里',6,'铜仁',7,'兴义',8,'毕节',8,'贵安',10,'黔江',11,'送周边',12)
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  • 原文地址:https://www.cnblogs.com/rdchen/p/13756047.html
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