大约有 48,000 项符合查询结果（耗时：0.0887秒） [XML]
How to check if a database exists in SQL Server?
... SteveC
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answered Mar 24 '09 at 20:05
eKek0eKek0
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How to merge 2 JSON objects from 2 files using jq?
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Since 1.4 this is now possible with the * operator. When given two objects, it will merge them recursively. For example,
jq -s '.[0] * .[1]' file1 file2
Important: Note the -s (--slurp) flag, which puts files in the same array.
W...
JavaScript hard refresh of current page
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derekjobst
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answered Jan 20 '10 at 5:17
Christian C. SalvadóChristian C. Salvadó
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How to get string width on Android?
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Andrii Abramov
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answered Sep 2 '10 at 19:05
FrankFrank
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Equivalent of varchar(max) in MySQL?
...max length of a varchar is subject to the max row size in MySQL, which is 64KB (not counting BLOBs):
VARCHAR(65535)
However, note that the limit is lower if you use a multi-byte character set:
VARCHAR(21844) CHARACTER SET utf8
Here are some examples:
The maximum row size is 65535, but a var...
Get file name and extension in Ruby
... can use the following functions for your purpose:
path = "/path/to/xyz.mp4"
File.basename(path) # => "xyz.mp4"
File.extname(path) # => ".mp4"
File.basename(path, ".mp4") # => "xyz"
File.basename(path, ".*") # => "xyz"
File.dirname(path) # => "/path/to"
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Convert list of dictionaries to a pandas DataFrame
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Supposing d is your list of dicts, simply:
df = pd.DataFrame(d)
Note: this does not work with ...
Printing all global variables/local variables?
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496
Type info variables to list "All global and static variable names".
Type info locals to list ...
How to select only the first rows for each unique value of a column
... bit type.
– nuit9
Jan 11 '11 at 21:43
1
@nuit9: of course it won't work with bit and 10 columns....
IntelliJ IDEA hint parameters of method
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edited Nov 25 '15 at 8:40
schnatterer
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answere...