大约有 30,000 项符合查询结果（耗时：0.0468秒） [XML]
Simple Log to File example for django 1.3+
... 'level': 'DEBUG',
},
}
}
Now what does all of this mean?
Formaters I like it to come out as the same style as ./manage.py runserver
Handlers - I want two logs - a debug text file, and an info console. This allows me to really dig in (if needed) and look at a text file to s...
What's the difference between “Architectures” and “Valid Architectures” in Xcode Build Settings?
What's the meaning of them and can I set them in different values?
2 Answers
2
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MySQL INNER JOIN select only one row from second table
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You need to have a subquery to get their latest date per user ID.
SELECT a.*, c.*
FROM users a
INNER JOIN payments c
ON a.id = c.user_ID
INNER JOIN
(
SELECT user_ID, MAX(date) maxDate
FROM payments
GROUP BY user_ID
) b ON c.user_ID = b....
jQuery Selector: Id Ends With?
Is there a selector that I can query for elements with an ID that ends with a given string?
9 Answers
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Select first row in each GROUP BY group?
... Firebird 3.0+, Teradata, Sybase, Vertica:
WITH summary AS (
SELECT p.id,
p.customer,
p.total,
ROW_NUMBER() OVER(PARTITION BY p.customer
ORDER BY p.total DESC) AS rk
FROM PURCHASES p)
SELECT s.*
FROM summary s
WHERE ...
Copy all files with a certain extension from all subdirectories
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Yes. 'bin it' means to throw it away. Now amended :-)
– Brian Agnew
Mar 25 '13 at 14:12
13
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Pointers in C: when to use the ampersand and the asterisk?
...just starting out with pointers, and I'm slightly confused. I know & means the address of a variable and that * can be used in front of a pointer variable to get the value of the object that is pointed to by the pointer. But things work differently when you're working with arrays, strings or...
What is /dev/null 2>&1?
...hich discards it.
(The >> seems sort of superfluous, since >> means append while > means truncate and write, and either appending to or writing to /dev/null has the same net effect. I usually just use > for that reason.)
2>&1 redirects standard error (2) to standard output...
What does this mean: Failure [INSTALL_FAILED_CONTAINER_ERROR]?
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This means there was an earlier installation that was corrupt. If you install on external I would suggest that you format the sd card an try again.
share
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Java reflection - impact of setAccessible(true)
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Yeah, this is just sample code. I mean, throws Exception also handles NoSuchFieldException, but you may want to handle it in a more elaborate way.
– Moritz Petersen
Jan 24 '19 at 16:36
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