大约有 42,000 项符合查询结果（耗时：0.0526秒） [XML]
Find rows that have the same value on a column in MySQL
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This query will give you a list of email addresses and how many times they're used, with the most used addresses first.
SELECT email,
count(*) AS c
FROM TABLE
GROUP BY email
HAVING c > 1
ORDER BY c DESC
If you want the full rows:
select * from table where email ...
How do SO_REUSEADDR and SO_REUSEPORT differ?
The man pages and programmer documentations for the socket options SO_REUSEADDR and SO_REUSEPORT are different for different operating systems and often highly confusing. Some operating systems don't even have the option SO_REUSEPORT . The WEB is full of contradicting information regarding th...
How to force JS to do math instead of putting two strings together
... Even simpler than that would be dots = +dots+5.
– Andy E
Sep 15 '11 at 16:44
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Is it possible to print a variable's type in standard C++?
... update to a very old question: Print variable type in C++.
The accepted (and good) answer is to use typeid(a).name(), where a is a variable name.
Now in C++11 we have decltype(x), which can turn an expression into a type. And decltype() comes with its own set of very interesting rules. For exam...
text flowing out of div
When the text is without spaces and more than the div size 200px it's flowing out
The width is defined as 200px
I have put my code here http://jsfiddle.net/madhu131313/UJ6zG/
You can see the below pictures
edited : I want the the text to go to the next line
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Print second last column/field in awk
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This does not work for me. I get "title:5: command not found: NF-1" in awk 3.1.8 under Ubuntu.
– Gurgeh
May 2 '12 at 11:20
3
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What is Objective C++? [closed]
What is Objective C++ and can I use this language in Xcode?
3 Answers
3
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CSS \9 in width property
...E 7, 8, & 9.
All other browsers will ignore width: 500px\9; entirely, and therefore not apply width: 500px; to the element at all.
If your CSS looked like this...
#myElement {
width: 300px;
width: 500px\9;
}
The result would be #myElement 500 pixels wide in IE 7, 8, & 9, while i...
Redis connection to 127.0.0.1:6379 failed - connect ECONNREFUSED
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After you install redis, type from terminal:
redis-server
and you'll have redis running
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Is there a macro recorder for Eclipse? [closed]
Is there a good Eclipse plugin for recording and playing back macros?
9 Answers
9
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