大约有 47,000 项符合查询结果(耗时:0.0359秒) [XML]

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Oracle query to fetch column names

...r case, I'd imagine the query would look something like: String sqlStr= " SELECT column_name FROM all_tab_cols WHERE table_name = 'USERS' AND owner = '" +_db+ "' AND column_name NOT IN ( 'PASSWORD', 'VERSION', 'ID' )" Note that with this approach, you risk SQL injection. EDIT: Uppercase...
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How to determine total number of open/active connections in ms sql server 2005

... This shows the number of connections per each DB: SELECT DB_NAME(dbid) as DBName, COUNT(dbid) as NumberOfConnections, loginame as LoginName FROM sys.sysprocesses WHERE dbid > 0 GROUP BY dbid, loginame And this gives the total: SELECT CO...
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Resharper Alt Enter not working

...g the radio buttons and clicking OK. Then switching back to the previously selected radiobutton. Edit Here is how to change/assign keyshort cuts in Visual Studio/Resharper from JetBrains Knowledge Base The command you are looking for is called "ReSharper_QuickFix". In version 8, this is called "R...
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Ineligible Devices section appeared in Xcode 6.x.x

...6 my devices moved to greyed-out section Ineligible Devices and I can't select them as deploy target: 32 Answers ...
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How do I search within an array of hashes by hash values in ruby?

... You're looking for Enumerable#select (also called find_all): @fathers.select {|father| father["age"] > 35 } # => [ { "age" => 40, "father" => "Bob" }, # { "age" => 50, "father" => "Batman" } ] Per the documentation, it "returns a...
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Imply bit with constant 1 or 0 in SQL Server

Is it possible to express 1 or 0 as a bit when used as a field value in a select statement? 8 Answers ...
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How do I check if a Sql server string is null or empty

... I think this: SELECT ISNULL(NULLIF(listing.Offer_Text, ''), company.Offer_Text) AS Offer_Text FROM ... is the most elegant solution. And to break it down a bit in pseudo code: // a) NULLIF: if (listing.Offer_Text == '') temp := nu...
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CSS3 selector :first-of-type with class name?

Is it possible to use the CSS3 selector :first-of-type to select the first element with a given class name? I haven't been successful with my test so I'm thinking it's not? ...
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Error while installing json gem 'mkmf.rb can't find header files for ruby'

...installing command-line tools and accepting the license with sudo xcode-select --install sudo xcodebuild -license accept The issue is that Xcode 11 ships the macOS 10.15 SDK which includes headers for ruby2.6, but not for macOS 10.14's ruby2.3. You can verify that this is your problem by runnin...
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Selectively revert or checkout changes to a file in Git?

... @Jan Do other version control systems' revert command allow you to select which changes within a file are reverted? Genuinely asking, as I only have experience with CVS and Git. In Git, git checkout -- path/to/file is a single command that reverts all changes in that file, but this is not th...