大约有 32,294 项符合查询结果（耗时：0.0637秒） [XML]
How do you create a read-only user in PostgreSQL?
...unately, this is all quite a bit more complicated than this. :-/ I'll post what I ended up doing once I've validated it some more.
– JJC
Dec 23 '14 at 4:03
...
Why does MYSQL higher LIMIT offset slow the query down?
...
@harald: what exactly do you mean by "not work"? This is a pure performance improvement. If there is no index usable by ORDER BY or the index covers all fields you need, you don't need this workaround.
– Quassnoi...
Using javadoc for Python documentation [closed]
...
what do you do if you need to break a line for a long description? How would that look?
– Skylar Saveland
Sep 3 '12 at 2:14
...
JMS Topic vs Queues
I was wondering what is the difference between a JMS Queue and JMS Topic.
9 Answers
9
...
Asp.net MVC ModelState.Clear
...lState in Asp.net MVC (or a link to one). In particular I need to know in what situations it is necessary or desirable to call ModelState.Clear() .
...
CSS center display inline block?
...
and what if I don't want ALL of my elements placed in body to be text-aligned center?? this sounds like a huge overkill to me
– phil294
Apr 1 '16 at 20:40
...
find() with nil when there are no records
...
Why don't you simply catch the exception? Your case looks exactly like what exceptions were made for:
begin
user = User.find(10)
rescue ActiveRecord::RecordNotFound
puts "some error msg"
end
If you want to recover from the error in the rescue block (e.g. by setting a placeholder user (nul...
GIT merge error “commit is not possible because you have unmerged files”
... files with conflict highlighted. I removed the conflicts but I don't know what to do from here..
7 Answers
...
START_STICKY and START_NOT_STICKY
What is the difference between START_STICKY and START_NOT_STICKY while implementing services in android? Could anyone point out to some standard examples.. ?
...
How to add display:inline-block in a jQuery show() function?
... Even though this is the accepted answer but it doesn't reflect what's stated in jquery docs: This is roughly equivalent to calling .css( "display", "block" ), except that the display property is restored to whatever it was initially. If an element has a display value of inline, then is h...