大约有 30,000 项符合查询结果(耗时:0.0624秒) [XML]

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Modify table: How to change 'Allow Nulls' attribute from not null to allow null

How to change one attribute in a table using T-SQL to allow nulls (not null --> null)? Alter table maybe? 8 Answers ...
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Android file chooser [closed]

I want to make a file uploader. And I hence I need a file chooser but I don't want to write this by myself. I find OI file manager and I think it suits me. But how can I force user to install OI file manager? If I cannot , is there a better way to include a file manager in my app? Thx ...
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How can I list all collections in the MongoDB shell?

In the MongoDB shell, how do I list all collections for the current database that I'm using? 22 Answers ...
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How do I change the hover over color for a hover over table in Bootstrap?

I have a table with class 'table-hover'. The default hover over color is a white / light grey. How do I change this color? ...
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How can I get the current screen orientation?

I just want to set some flags when my orientation is in landscape so that when the activity is recreated in onCreate() i can toggle between what to load in portrait vs. landscape. I already have a layout-land xml that is handling my layout. ...
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Identifying and removing null characters in UNIX

I have a text file containing unwanted null characters (ASCII NUL, \0 ). When I try to view it in vi I see ^@ symbols, interleaved in normal text. How can I: ...
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“A project with an Output type of Class Library cannot be started directly”

I downloaded a C# project and I wish to debug the project to see how an algorithm implementation works. 12 Answers ...
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How do I list the functions defined in my shell?

I can type alias to show a list of all the aliases. 8 Answers 8 ...
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How do I remove all .pyc files from a project?

I've renamed some files in a fairly large project and want to remove the .pyc files they've left behind. I tried the bash script: ...
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“rm -rf” equivalent for Windows?

I need a way to recursively delete a folder and its children. 21 Answers 21 ...