大约有 8,000 项符合查询结果（耗时：0.0339秒） [XML]
Fetch the row which has the Max value for a column
...
select userid,
my_date,
...
max(my_date) over (partition by userid) max_my_date
from users
)
where my_date = max_my_date
"Analytic functions rock"
Edit: With regard to the first comment ...
"using analytic queries and a self-join defeats the purpose of analytic queries"
...
When to use enumerateObjectsUsingBlock vs. for
Besides the obvious differences:
6 Answers
6
...
How can I make a weak protocol reference in 'pure' Swift (without @objc)
...
My problem with this solutions is that calling the delegate causes a crash - EXC_BAD_ACCESS (as noted by others elsewhere). This seems to be bug. The only solution I have found is to use @objc and eliminate all Swift data types from the protocol.
...
UIView Infinite 360 degree rotation animation?
...em working, without the UIView either stopping, or jumping to a new position.
27 Answers
...
UIPopovercontroller dealloc reached while popover is still visible
I assure you that I did look for an answer in SO for my question but none of them were helpful. Here I got a simple code that should present a UIImagePickerController within a UIPopoverController :
...
Haskell error parse error on input `='
...s are supported in GHCi, so OP's code will work without change.
GHCi, version 8.0.1.20161213: http://www.haskell.org/ghc/ :? for help
Prelude> f x = x * 2
Prelude> f 4
8
share
|
improve thi...
.gitignore for Visual Studio Projects and Solutions
Which files should I include in .gitignore when using Git in conjunction with Visual Studio Solutions ( .sln ) and Projects?
...
How to vertically center content with variable height within a div?
... of the container div is fixed, but it would be great if there were a solution that would work in cases where the container has a variable height as well. Also, I would love a solution with no, or very little use of CSS hacks and/or non-semantic markup.
...
Can CSS detect the number of children an element has?
I'm probably answering my own question, but I'm extremely curious.
7 Answers
7
...
Determine if string is in list in JavaScript
...ype.indexOf which are not the same thing. I would recommend the implementation made by Mozilla available here: developer.mozilla.org/En/Core_JavaScript_1.5_Reference/Objects/…
– Christian C. Salvadó
Mar 12 '10 at 2:43
...