将带有大小写和时间的聚合SQL查询转换为MS Access

我在SQL中执行查询时没有问题，但在Access中不起作用 案例在访问权中不可用，因此必须使用IIf

select
    sum(case when date between '2012-05-01' AND '2012-06-01' then value else 0 end) as sum1,
    sum(case when date between '2012-05-01' AND '2012-10-01' then value else 0 end) as sum2,
    sum(case when situation like 'Urgent' then 1 else 0 end) as urgent,
    sum(case when situation like 'Anual' then 1 else 0 end) as anual,
    sum(1) as total
from mytable

有更好的方法吗？ 这个查询有效吗

  select
        sum(IIf date between '2012-05-01' AND '2012-06-01',value,0) as sum1,
        sum(IIf date between '2012-05-01' AND '2012-10-01',value,0) as sum2,
        sum(IIf situation like 'Urgent',1,0 ) as urgent,
        sum(IIf situation like 'Anual' ,1,0 ) as anual,
        sum(1) as total
    from mytable

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在

IIf（expression，truepart，falsepart）

将

日期

和

值

括在方括号中，因为两者都是保留字

您的

Like

比较没有包括任何模式匹配，因此我将

=

替换为

我假设date是日期/时间数据类型，所以用

分隔符将值括起来

SELECT
    Sum(IIf([date] BETWEEN #2012-05-01# AND #2012-06-01#,[value],0)) AS Sum1,
    Sum(IIf([date] BETWEEN #2012-05-01# AND #2012-10-01#,[value],0)) AS Sum2,
    Sum(IIf(situation = 'Urgent',1,0 )) AS urgent,
    Sum(IIf(situation = 'Anual' ,1,0 )) AS anual,
    Sum(1) AS total
FROM mytable;