大约有 47,000 项符合查询结果(耗时:0.0870秒) [XML]

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What are the uses for Cross Join?

...ly, like size and color information for a particular article of clothing: select size, color from sizes CROSS JOIN colors Maybe you want a table that contains a row for every minute in the day, and you want to use it to verify that a procedure has executed each minute, so you might c...
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Selecting the last value of a column

... Another good resource is the selected answer at productforums.google.com/forum/#!topic/docs/p3t3feg7Jic which shows how to get the first, last, or nth row in a FILTER()ed range, similar to @Geta's answer. – Aaron Blenkush ...
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How can I use swift in Terminal?

... sudo xcode-select -switch /Applications/Xcode.app/Contents/Developer then you can do one of these: xcrun swift lldb --repl As of Xcode 6.1 - typing swift in the terminal launches the REPL as well. ...
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What is the best collation to use for MySQL with PHP? [closed]

...ng utf8_general_ci. MySQL will not distinguish between some characters in select statements, if the utf8_general_ci collation is used. This can lead to very nasty bugs - especially for example, where usernames are involved. Depending on the implementation that uses the database tables, this problem...
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How to stop Visual Studio from opening a file on single click?

...anted to add that the button David is referring to has a tooltip: "Preview Selected Items" – Bruce van der Kooij Jan 11 '13 at 9:39 ...
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How to select different app.config for several build configurations

...ctory. So if you had PatternPA.Test.Integration project and a Debug config selected, in the output folder after the build you will find a PatternPA.Test.Integration.dll.config file which was copied from Config\App.Debug.config and renamed afterwards. These are some notes you can leave in the config...
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“Wrap with try…catch” in IntelliJ?

Can I select a block of code and have IntelliJ wrap it with a "try...catch" ? 9 Answers ...
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Disable/enable an input with jQuery?

....prop() or .attr() methods is that you can set the property for a bunch of selected items. Note: In 1.6 there is a .removeProp() method that sounds a lot like removeAttr(), but it SHOULD NOT BE USED on native properties like 'disabled' Excerpt from the documentation: Note: Do not use this me...
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MySQL indexes - what are the best practices?

...t them. Generally I put an index on any fields that I will be searching or selecting using a WHERE clause but sometimes it doesn't seem so black and white. ...
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Fetch frame count with ffmpeg

.... See Edit lists below. ffprobe: Query the container ffprobe -v error -select_streams v:0 -show_entries stream=nb_frames -of default=nokey=1:noprint_wrappers=1 input.mp4 This is a fast method. Not all formats (such as Matroska) will report the number of frames resulting in the output of N/A. ...