簡體   English   中英

Oracle APEX DISTINCT標簽?

[英]Oracle APEX DISTINCT Label?

這是怎么了?

select NULL as "LINK",
       DISTINCT HARDWAREOVERZICHT_STATIC."TOPDESK_vestiging" as "LABEL",
count( ZAM_BUILDING) as "STORK7" 
from HARDWAREOVERZICHT_STATIC 
where Omgeving = 'STORK7'
and "TOPDESK_heeftattentie" = 0
group by HARDWAREOVERZICHT_STATIC."TOPDESK_vestiging",ZAM_BUILDING 
order by HARDWAREOVERZICHT_STATIC."TOPDESK_vestiging" desc

DISTINCT是緊隨SELECT並應用於子句中所有列的關鍵字。 但是,通常不需要group by

select NULL as "LINK", s."TOPDESK_vestiging" as "LABEL",  
      count( ZAM_BUILDING) as "STORK7"
from HARDWAREOVERZICHT_STATIC s
where Omgeving = 'STORK7' and "TOPDESK_heeftattentie" = 0
group by s."TOPDESK_vestiging"
order by s."TOPDESK_vestiging" desc;

我通過將該group by ZAM_BUILDING從該group by刪除。 否則, count()將始終為01 我還添加了一個表別名。

暫無
暫無

聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.

 
粵ICP備18138465號  © 2020-2024 STACKOOM.COM