在选择结束时插入虚拟值答案

【问题标题】：Inserting dummy values at the end of select在选择结束时插入虚拟值
【发布时间】：2014-06-26 16:24:57
【问题描述】：

我有查询返回地址和上周针对每个地址的已完成订单。我需要在结果集中插入三个虚拟值。

select  ADDRESS
    ,SUM(Case When  OrderDate >= dateadd(dd,(datediff(dd,-53690,getdate()-1)/7)*7,-53690)
              Then 1
            Else 0 
            End) as Completed
from orders 
GROUP BY ADDRESS
order by ADDRESS

结果

地址-------------完成

地址1----------------3

地址2----------------3

地址3----------------3

地址4----------------3

所有这些值都来自数据库，但我想插入三行硬编码值

预期结果

地址-------------完成

地址1----------------3

地址2----------------3

地址3----------------3

地址4----------------3

dummy1-----------------0

dummy2-----------------0

dummy3------------------0

尝试失败

select  ADDRESS
    ,SUM(Case When  OrderDate >= dateadd(dd,(datediff(dd,-53690,getdate()-1)/7)*7,-53690)
              Then 1
            Else 0 
            End) as Completed
from orders 

union all 
select
    'dummy1', 0
GROUP BY ADDRESS
order by ADDRESS

【问题讨论】：

标签： sql sql-server tsql

【解决方案1】：

试试-

select  ADDRESS
,SUM(Case When  OrderDate >= dateadd(dd,(datediff(dd,-53690,getdate()-1)/7)*7,-53690)
          Then 1
        Else 0 
        End) as Completed
from orders 
union all 
select
  'dummy1' AS Address, SUM(0) AS Completed 
GROUP BY ADDRESS
order by ADDRESS

【讨论】：

【解决方案2】：

检查一下 - 它可能会帮助您：

Adding a static value to the results of an SQL query

联合之后 - 做

选择“dummy1”作为地址，选择 1 作为已完成

【讨论】：

【解决方案3】：

select ADDRESS
      ,SUM(Case When  OrderDate >= dateadd(dd,(datediff(dd,-53690,getdate()-1)/7)*7,-53690)
              Then 1
              Else 0 
              End) as Completed
from orders 
GROUP BY ADDRESS
UNION
select 'dummy1', 0
UNION
select 'dummy2', 0
UNION
select 'dummy3', 0
order by ADDRESS

【讨论】：

【解决方案4】：

您可以创建一个虚拟表变量，然后像这样插入您选择的记录

DECLARE @ordertable (Address varchar(100), Completed int);

//Add your data
INSERT INTO @ordertable (Address, Completed) (
    select  ADDRESS
           ,SUM(Case When  OrderDate >= dateadd(dd,(datediff(dd,-53690,getdate()-1)/7)*7,-53690)
                Then 1
                Else 0 
                End) as Completed
    from orders 
    GROUP BY ADDRESS
    order by ADDRESS)

//Insert dummy data
INSERT INTO @ordertable (Address, Completed) VALUES(dummy1, 0)
INSERT INTO @ordertable (Address, Completed) VALUES(dummy2, 0)
INSERT INTO @ordertable (Address, Completed) VALUES(dummy3, 0)

那么只需SELECT * from @ordertable 就可以了！

【讨论】：

你的方法似乎只是修改你的表创建代码如下 DECLARE @table TABLE (地址 NVARCHAR(100) , Completed TINYINT)