大约有 40,000 项符合查询结果(耗时:0.0434秒) [XML]

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Xcode is not currently available from the Software Update server

...e Xcode command line tools is pointed correctly using this command xcode-select -p Which might show some path like /Applications/Xcode.app/Contents/Developer Change the path to correct path using the switch command xcode-select --switch /Library/Developer/CommandLineTools/ this should...
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What does SQL clause “GROUP BY 1” mean?

... SELECT account_id, open_emp_id ^^^^ ^^^^ 1 2 FROM account GROUP BY 1; In above query GROUP BY 1 refers to the first column in select statement which is account_id. You also can speci...
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How do I remove a project configuration in Visual Studio 2008?

... In the Configuration Manager, select "Edit..." in the "Configuration" column for each project (not via the dropdown named Active solution configuration) that has configurations you want to remove. In the dialog that pops up, mark each unwanted configurat...
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jQuery vs document.querySelectorAll

...er , as far as I know, you can achieve the same result with document.querySelector or document.querySelectorAll , which are supported in Internet Explorer 8 and above. ...
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How to change context root of a dynamic web project in Eclipse?

...nd redeploy. It worked for me. If you are struck you have another choice: select the Tomcat server in the Servers view. Double clicking on that server (or selecting Open in the context menu) brings a multipage editor where there is a Modules page. Here you can change the root context of your module...
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In Vim, how do I apply a macro to a set of lines?

... matching pattern. :g/pattern/norm! @a To execute the macro on visually selected lines, press V and the j or k until the desired region is selected. Then type :norm! @a and observe the that following input line is shown. :'<,'>norm! @a Enter :help normal in vim to read more. ...
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How to check existence of user-define table type in SQL Server 2008?

...y. You can't use OBJECT_ID to search for a table type by name -- check out SELECT name FROM sys.objects WHERE type = 'TT' – NReilingh Nov 29 '15 at 9:17 add a comment ...
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Generate table relationship diagram from existing schema (SQL Server) [closed]

...nstalled ) . Just right Click on Database Diagrams and create new diagram. Select the exisiting tables and if you have specified the references in your tables properly. You will be able to see the complete diagram of selected tables. For further reference see Getting started with SQL Server databas...
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Where is SQL Server Management Studio 2012?

...all the entire SQL Server package, later on in the install process you can select to only install SSMS. – Baodad Jul 24 '13 at 18:21 ...
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COUNT DISTINCT with CONDITIONS

... You can try this: select count(distinct tag) as tag_count, count(distinct (case when entryId > 0 then tag end)) as positive_tag_count from your_table_name; The first count(distinct...) is easy. The second one, looks somewhat complex...