大约有 40,000 项符合查询结果(耗时:0.0290秒) [XML]

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Select records from NOW() -1 Day

... by >= NOW() -1 so all records from the day before today to the future are selected? 6 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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How to sleep for five seconds in a batch file/cmd [duplicate]

...specify the timeout in seconds and the /D parameter to specify the default selection and ignore then selected choice. The one thing that might be an issue is if the user types one of the choice characters before the timeout period elapses. A partial work-around is to obfuscate the situation -- use ...
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Distinct in Linq based on only one field of the table

... Try this: table1.GroupBy(x => x.Text).Select(x => x.FirstOrDefault()); This will group the table by Text and use the first row from each groups resulting in rows where Text is distinct. ...
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Replace Default Null Values Returned From Left Outer Join

... for left outer join. Is there a way to replace the default values in the select statement? I have a workaround in that I can select into a table variable but it feels a little dirty. ...
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How can you programmatically tell an HTML SELECT to drop down (for example, due to mouseover)?

How can you programmatically tell an HTML select to drop down (for example, due to mouseover)? 12 Answers ...
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Difference between SelectedItem, SelectedValue and SelectedValuePath

... Their names can be a bit confusing :). Here's a summary: The SelectedItem property returns the entire object that your list is bound to. So say you've bound a list to a collection of Category objects (with each Category object having Name and ID properties). eg. ObservableCollection&l...
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Transferring an app to another Firebase account

...another account. All you have to do is: Go to your Firebase console, and select the project you want to shift. Select the cog icon besides the project name on top right. Select Permissions from the flyout. Select Advanced permission settings hyperlink. You've reached the IAM & Admin page of Fi...
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How do I write LINQ's .Skip(1000).Take(100) in pure SQL?

...W_NUMBER function. eg. USE AdventureWorks; GO WITH OrderedOrders AS ( SELECT SalesOrderID, OrderDate, ROW_NUMBER() OVER (ORDER BY OrderDate) AS 'RowNumber' FROM Sales.SalesOrderHeader ) SELECT * FROM OrderedOrders WHERE RowNumber BETWEEN 51 AND 60; --BETWEEN is inclusive ...
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Joining three tables using MySQL

... Simply use: select s.name "Student", c.name "Course" from student s, bridge b, course c where b.sid = s.sid and b.cid = c.cid share | ...