Question

下面的查询不会运行，因为我有一个连接图断开连接。据我所知，当你对一个表进行别名时，你必须先把它放在连接条件中，但是当我这样做时，我仍然会得到同样的错误，有什么建议吗？

select 
date1.LABEL_YYYY_MM_DD as Some_Label1,
A.Some_Field as Some_Label2,
round(sum(D.Some_Field3)/count (*),0)as Some_Label3
from Table_A A
inner JOIN Table_B B ON (A.some_key = B.some_key)
inner JOIN date_time date1 ON (A.START_DATE_TIME_KEY = date1.DATE_TIME_KEY)
left outer join Table_C  C  on(C.some_GUID = A.some_ID)
left outer join Table_D  D  on(D.a_ID = C.a_ID)
where 
(1=1)
and date1.LABEL_YYYY_MM_DD ='2015-03-30'
and D.blah ='1'
group by 
date1.LABEL_YYYY_MM_DD,
A.Some_Field 
order by
date1.LABEL_YYYY_MM_DD
;

根据我上面的评论，我应该将第一个内部联接更改为B.some_key = A.some_key，依此类推但是我仍然会断开连接......

Answer 1

根据Oracle文档（http://docs.oracle.com/javadb/10.8.3.0/ref/rrefsqlj18922.html），ON和布尔表达式之间需要空格

连接图断开ORACLE

1 个答案: