SQL顯示幾個月的結果 - 如何僅顯示當前年份？

Question

我的SQL表達式可以正常顯示幾個月的結果，今年也可以。但是一年之後，我知道它會包含今年的結果。如何僅顯示當年的結果？

select case month(timestamp_iso(STATUSDATE)) 
     when 1 then 'January' 
     when 2 then 'February' 
     when 3 then 'March' 
     when 4 then 'April' 
     when 5 then 'May' 
     when 6 then 'Jun' 
     when 7 then 'July' 
     when 8 then 'August' 
     when 9 then 'September' 
     when 10 then 'October' 
     when 11 then 'November' 
     when 12 then 'December' 
    end as Month, 

    count (case when service='ADSL' then 1 end) as ADSL, 
    count (*) as ALL 

from INCIDENT 
group by month(timestamp_iso(STATUSDATE)) 

感謝

Answer 1

添加where條款到最後：

where year(STATUSDATE) = year(current_timestamp) 

Answer 2

只需添加一個where條款！

你也可以使用monthname讓你在的情況下做什麼：

select MONTHNAME(timestamp_iso(STATUSDATE)) as Month, 
    count (case when service='ADSL' then 1 end) as ADSL, 
    count (*) as ALL 

from INCIDENT 
where year(STATUSDATE) = year(current_timestamp) 
group by month(timestamp_iso(STATUSDATE)) 

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欲瞭解更多信息，請THIS或THIS。