如何使用Linq仅显示与SQL查询类似的pc名称和服务器名称?表'pc‘没有'os’的导航属性
select pc.name, server.namejoin pc_os on pc.id = pc_os.id_pcjoin os_server on os_server.id_os = os.id
join server on server.id = os_server.id_se
我在SQL Server2005上有一个非常慢的SQL查询。仅做一次select操作就需要近40秒。在select之后,我获得结果查询,并使用此结果执行插入操作。SELECT DISTINCT FROM INNER JOININNERJOININNER JOIN
tableD AS D ON C.text
Input = df=pd.merge(Bx_Users,BX_ratings,on='user_id') File "C:/Users/91943/AppData/Roaming/JetBrains/PyCharmCE2020.2/scratches/MergingwithSummerclothingdataset.py", line 14, in <module>
df=pd.merge(Bx_Users,BX_ratings,on='us
hqlQuery = "from FooD d left join fetch d.bill where d.ts < :ts"hqlQuery ="SELECT d.id from FooD d left join fetch d.bill where d.ts < :ts"
我得到一个"query specified join fetching然后,我将查询转换为常规的Oracle SQL</em