大约有 571 项符合查询结果（耗时：0.0281秒） [XML]
Aggregate / summarize multiple variables per group (e.g. sum, mean)
....122369 -128.122613
...
23 2000 12 63.436507 449.794454
24 2001 12 999.472226 922.726589
See ?aggregate, the formula argument and the examples.
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Generating a random & unique 8 character string using MySQL
...is is the best solution I think. Thanks man!
– Pronoy999
Jul 8 at 7:37
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Why doesn't ruby support method overloading?
...variable number of arguments in Ruby methods.
– ashes999
Apr 2 '14 at 16:18
3
This answer might b...
Multiline strings in JSON
...ckslash followed by an en, as JSON requires.
– user359996
Jan 30 '13 at 21:57
6
@user359996 I'm n...
Entity Framework: table without primary key
...nt of your view in another select.
Example:
SELECT
ISNULL(MyPrimaryID,-999) MyPrimaryID,
NULLIF(AnotherProperty,'') AnotherProperty
FROM ( ... ) AS temp
answered Apr 26 '10 at 17:00 by Tillito
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Keeping ASP.NET Session Open / Alive
...dIn event of the login control)
Dim loggedOutAfterInactivity As Integer = 999 'Minutes
'Keep the session alive as long as the authentication cookie.
Session.Timeout = loggedOutAfterInactivity
'Get the authenticationTicket, decrypt and change timeout and create a new one.
Dim formsAuthenticationTi...
IF… OR IF… in a windows batch file
...l1" "val2" "val3" ) do if "%VAR%"==%%A echo true
– Ed999
Jul 8 at 1:08
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Initializing a list to a known number of elements in Python [duplicate]
...00 elements in size and which happens to be initialised with values from 0-999. As list does a __len__ first to size the new list it should be fairly efficient.
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.NET Process.Start default directory?
...er -- the default directory is SYSTEMROOT. +1
– ashes999
Oct 12 '11 at 14:05
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How to .gitignore files recursively
...
What about prior to git 1.8?
– ashes999
Apr 7 '15 at 20:40
1
If this answer does...