大约有 577 项符合查询结果（耗时：0.0251秒） [XML]
SQL SELECT speed int vs varchar
...TX: B=9ms/record C=9ms/record
Bulk insert* in single TX: B=140usec/record C=180usec/record
Indexed by id, select by id: B=about 200us C=about 200us
* inserts to the table already containing 4M records
so it looks like for this setup, as long as your indexes fit in RAM, b...
Why is “origin/HEAD” shown when running “git branch -r”?
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@robinst is correct.
In git, you can select which branch is checked out by default (i.e. when...
How to install ia32-libs in Ubuntu 14.04 LTS (Trusty Tahr)
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You can try this to install the 32-bit library (not all in ia32-libs):
sudo apt-get install...
What Does Question Mark Mean in Xcode Project Navigator?
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It's the file untracked by source control.
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AsyncTask and error handling on Android
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Create an AsyncResult object ( which you can also use in other projects)
public class AsyncTa...
Disable same origin policy in Chrome
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Brad
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answered Jul 5 '10 at 7:20
Dagg NabbitDa...
How do I limit the number of rows returned by an Oracle query after ordering?
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AskTom: 28-30 seconds
Analytical: 33-37 seconds
Short alternative: 110-140 seconds
Selecting rows between 100,000 and 100,010:
AskTom: 60 seconds
Analytical: 100 seconds
Selecting rows between 9,000,000 and 9,000,010:
AskTom: 130 seconds
Analytical: 150 seconds
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Find element's index in pandas Series
...6 µs per loop
In [4]: %timeit Index(s).is_unique
10000 loops, best of 3: 140 µs per loop
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Find object in list that has attribute equal to some value (that meets any condition)
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agfagf
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How do I make the first letter of a string uppercase in JavaScript?
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$('#mystring_id').text(string).css('text-transform','capitalize');
– DonMB
Sep 24 '15 at 17:34
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