大约有 47,800 项符合查询结果（耗时：0.0644秒） [XML]
How do I use ROW_NUMBER()?
...ion, why not just use?
SELECT COUNT(*) FROM myTable
to get the count.
And for the second question, the primary key of the row is what should be used to identify a particular row. Don't try and use the row number for that.
If you returned Row_Number() in your main query,
SELECT ROW_NUMBER()...
Oracle SELECT TOP 10 records
....YYYY') AS HISTORY_DATE
FROM HISTORY WHERE
STORAGE_GB IS NOT NULL AND
APP_ID NOT IN (SELECT APP_ID FROM HISTORY WHERE TO_CHAR(HISTORY_DATE, 'DD.MM.YYYY') ='06.02.2009')
ORDER BY STORAGE_GB DESC )
WHERE ROWNUM <= 10
Oracle applies rownum to the result after it has been returned...
Count with IF condition in MySQL query
I have two tables, one is for news and the other one is for comments and I want to get the count of the comments whose status has been set as approved.
...
Linq to Entities join vs groupjoin
... [b1, b2]
C []
So Join produces a flat (tabular) result of parent and child values.
GroupJoin produces a list of entries in the first list, each with a group of joined entries in the second list.
That's why Join is the equivalent of INNER JOIN in SQL: there are no entries for C. While Group...
How is performance affected by an unused using directive?
...rformance of your application.
It can affect the performance of the IDE and the overall compilation phase. The reason why is that it creates an additional namespace in which name resolution must occur. However these tend to be minor and shouldn't have a noticeable impact on your IDE experience ...
Git rebase fails, 'Your local changes to the following files would be overwritten by merge'. No loca
...e upstream changes pulled into master since the bugfix branch was created, and it now refuses to rebase.
2 Answers
...
How to get the previous URL in JavaScript?
...tory allows navigation, but not access to URLs in the session for security and privacy reasons. If more detailed URL history was available, then every site you visit could see all the other sites you'd been to.
If you're dealing with state moving around your own site, then it's possibly less fragi...
How do I resolve the “java.net.BindException: Address already in use: JVM_Bind” error?
...
@novice_developer netstat is the command you are looking for, with -a and -p options, man netstat is your friend for all the rest :)
– sox with Monica
Jul 26 '17 at 20:38
...
How do I use CREATE OR REPLACE?
Am I correct in understanding that CREATE OR REPLACE basically means "if the object exists, drop it, then create it either way?"
...
How to call an async method from a getter or setter?
...int (2) wouldn't work in that case. Just implement INotifyPropertyChanged, and then decide whether you want the old value returned or default(T) while the asynchronous update is in flight.
– Stephen Cleary
Nov 19 '13 at 11:57
...