大约有 16,100 项符合查询结果（耗时：0.0238秒） [XML]
Group by month and year in MySQL
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Performance... my test of GROUP BY YEAR(date), MONTH(date) DESC; (~450 ms) and GROUP BY DATE_FORMAT(date,'%Y-%m') (~850 ms) on a InnoDB table with > 300,000 entries showed the former (the marked answer to this question) took ~half the time ...
What's the best way to do “application settings” in Android? [closed]
...e some application settings (like the URL of an API, and some settings for testing) for an Android application.
1 Answer
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Is git's semi-secret empty tree object reliable, and why is there not a symbolic name for it?
...n SHA?": it is SHA-2, since Git 2.19 (Q3 2018)
With Git 2.25 (Q1 2020), tests are preparing for a SHA-2 transition, and is involving the empty tree.
See commit fa26d5e, commit cf02be8, commit 38ee26b, commit 37ab8eb, commit 0370b35, commit 0253e12, commit 45e2ef2, commit 79b0edc, commit 840624f,...
Get the (last part of) current directory name in C#
...String(indexOfLastSlash, oldString.length());
Code may be off (I haven't tested it) but the idea should work
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How to get database structure in MySQL via query
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SELECT *
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_SCHEMA = 'test' AND TABLE_NAME ='products';
where Table_schema is database name
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Iterate through pairs of items in a Python list [duplicate]
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Tested this works in Py2.x and 3.x now.
– ideasman42
Sep 15 '17 at 12:00
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HTML tag want to add both href and onclick working
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@Ben I made test on fiddle without JS - only pure html: <a href="http://example.com" >Item</a> and in Chrome i see some message to allow page to run this link (alert at the end of chrome url bar). In safari in console I see w...
How can I read a text file without locking it?
...me google queries i found this:
FileStream fs = new FileStream(@”c:\test.txt”,
FileMode.Open,
FileAccess.Read,
FileShare.ReadWrite);
i.e. use the FileShare.ReadWrite attribut...
Why doesn't print work in a lambda?
...compatibility :) use the back-ported print function if you are using the latest Python 2.x:
In [1324]: from __future__ import print_function
In [1325]: f = lambda x: print(x)
In [1326]: f("HI")
HI
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Convert char to int in C#
...its another example of how .NET promotes bloatware. (I mean go on and unit-test TryParse() and ToString() - you can't, not practically).
– logout
Aug 19 '10 at 11:55
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