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how do I query sql for a latest record date for each user
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select t.username, t.date, t.value
from MyTable t
inner join (
select username, max(date) as MaxDate
from MyTable
group by username
) tm on t.username = tm.username and t.date = tm.MaxDate
...
Visual Studio : short cut Key : Duplicate Line
...ction. You can assign it to a different key combination, or find it in the menu:
See this reference for more information.
Pre VS2017, built-in method using clipboard
As @cand mentioned, you can just do Ctrl + C ; Ctrl + V.
Ctrl + C will copy the line if nothing is selected.
Macro solution (pr...
Finding the index of an item in a list
... as asked, index is a rather weak component of the list API, and I can't remember the last time I used it in anger. It's been pointed out to me in the comments that because this answer is heavily referenced, it should be made more complete. Some caveats about list.index follow. It is probably worth ...
How do I get bash completion to work with aliases?
...
As stated in the comments above,
complete -o default -o nospace -F _git_checkout gco
will no longer work. However, there's a __git_complete function in git-completion.bash which can be used to set up completion for aliases like so:
__git_com...
Why java.lang.Object is not abstract? [duplicate]
...questions which can be asked which may help clear it up.
Would any of the methods of Object benefit from being abstract?
It could be argued that some of the methods would benefit from this. Take hashCode() and equals() for instance, there would probably have been a lot less frustration around the ...
How can I get all the request headers in Django?
...ers. From what i've read, Django simply dumps everything into the request.META variable along with a lot aof other data. What would be the best way to get all the headers that the client sent to my Django application?
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Recommendation for compressing JPG files with ImageMagick
...output size is bigger than the input. I don't know why, but after adding some +profile options and setting down the quality I can get an smaller size but still similar to original.
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Best Practices: working with long, multiline strings in PHP?
Note: I'm sorry if this is an extremely simple question but I'm somewhat obsessive compulsive over the formatting of my code.
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What is the “->” PHP operator called and how do you say it when reading code out loud? [closed]
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The official name is "object operator" - T_OBJECT_OPERATOR. I call it "arrow".
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Howto: Clean a mysql InnoDB storage engine?
...able Indexes
MVCC (Multiversioning Concurrency Control) Data
Rollback Segments
Undo Space
Table Metadata (Data Dictionary)
Double Write Buffer (background writing to prevent reliance on OS caching)
Insert Buffer (managing changes to non-unique secondary indexes)
See the Pictorial Representation o...