大约有 42,000 项符合查询结果（耗时：0.0517秒） [XML]
Turning a Comma Separated string into individual rows
...9, '18,20,22'
INSERT Testdata SELECT 2, 8, '17,19'
INSERT Testdata SELECT 3, 7, '13,19,20'
INSERT Testdata SELECT 4, 6, ''
INSERT Testdata SELECT 9, 11, '1,2,3,4'
The query
;WITH tmp(SomeID, OtherID, DataItem, String) AS
(
SELECT
SomeID,
OtherID,
LEFT(String, CHAR...
How do I find the number of arguments passed to a Bash script?
...lzbankzsalzbank
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37
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Numpy first occurrence of value greater than existing value
...nce are returned.") and doesn't save another list.
In [2]: N = 10000
In [3]: aa = np.arange(-N,N)
In [4]: timeit np.argmax(aa>N/2)
100000 loops, best of 3: 52.3 us per loop
In [5]: timeit np.where(aa>N/2)[0][0]
10000 loops, best of 3: 141 us per loop
In [6]: timeit np.nonzero(aa>N/2)[0...
Is there type Long in SQLite?
...he SQLite docs
INTEGER. The value is a signed integer, stored in 1, 2, 3, 4, 6, or 8 bytes depending on the magnitude of the value.
Since long is 8 byte and INTEGER can also save values of 8 bytes, you can use INTEGER.
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Reset other branch to current without a checkout
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3 Answers
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Active
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Need some clarification about beta/alpha testing on the developer console
The Android developer console has 3 tabs for publishing the app's apk file:
alpha, beta and production, as shown here:
4 An...
Django - what is the difference between render(), render_to_response() and direct_to_template()?
...])
render() is a brand spanking new shortcut for render_to_response in 1.3 that will automatically use RequestContext that I will most definitely be using from now on.
2020 EDIT: It should be noted that render_to_response() was removed in Django 3.0
https://docs.djangoproject.com/en/1.8/topics...
String concatenation in MySQL
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283
MySQL is different from most DBMSs use of + or || for concatenation. It uses the CONCAT function...
How do I get out of a screen without typing 'exit'?
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631
Ctrl-a d or Ctrl-a Ctrl-d. See the screen manual # Detach.
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Convert int to string?
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answered Jun 21 '10 at 3:15
Anthony PegramAnthony Pegram
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