大约有 31,500 项符合查询结果(耗时:0.0256秒) [XML]

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How to create enum like type in TypeScript?

...llo" They are not very useful on their own but can be combined in a type union to create a powerful (and useful) abstraction e.g.: type CardinalDirection = "North" | "East" | "South" | "West"; function move(distance: number, direction: CardinalDirection) { // ... } move(1,"N...
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Selecting data from two different servers in SQL Server

... 'Server=YOUR SERVER;Trusted_Connection=yes;','SELECT * FROM Table1') AS a UNION SELECT * FROM OPENROWSET('SQLNCLI', 'Server=ANOTHER SERVER;Trusted_Connection=yes;','SELECT * FROM Table1') AS a share | ...
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What does immutable mean?

...ure but with mutable elements. This happens in some variations of undoable union-find IIRC. Immutability has big advantages, but sharing part or all of a data structure as an optimisation is perfectly possible with mutables. Even if you want apparent immutability for other references, you can always...
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How to generate a range of numbers between two numbers?

...0 DECLARE @endnum INT=1050 ; WITH gen AS ( SELECT @startnum AS num UNION ALL SELECT num+1 FROM gen WHERE num+1<=@endnum ) SELECT * FROM gen option (maxrecursion 10000) share | improv...
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Is bool a native C type?

...goto if int long register return short signed static struct switch typedef union unsigned void volatile while Here's an article discussing some other differences with C as used in the kernel and the standard: http://www.ibm.com/developerworks/linux/library/l-gcc-hacks/index.html ...
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MySQL INNER JOIN select only one row from second table

... @Fluffeh you have a very nice answer Part 1 - Joins and Unions. :) bookmarked! – John Woo Sep 21 '12 at 7:50 1 ...
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Is there common street addresses database design for all addresses of the world? [closed]

... lots of fields if you really want to be generic. The UPU Universal Postal Union provides address data for lots of countries in a standard format. Note that the UPU format holds all addresses (down to the available field precision) for a whole country, it is therefore relational. If storing customer...
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How to find the most recent file in a directory using .NET, and without looping?

...westFile(DirectoryInfo directory) { return directory.GetFiles() .Union(directory.GetDirectories().Select(d => GetNewestFile(d))) .OrderByDescending(f => (f == null ? DateTime.MinValue : f.LastWriteTime)) .FirstOrDefault(); } Just call it the fo...
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SELECT INTO a table variable in T-SQL

...ce table as long as the CTE doesn't reference multiple tables using joins, unions , etc. – nanestev Apr 13 '18 at 14:11 2 ...
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Is there a way to call a stored procedure with Dapper?

...like '%'+@keyword+'%' -- WHERE -- parentid = @parentid UNION ALL SELECT p.EventCategoryID as Id, cast(p.Title + '>>' + c.name as varchar(max)) as Name, c.IdHierarchy + cast(p.EventCategoryID as char(5)),p.ParentID FROM EventCategory p ...