大约有 45,000 项符合查询结果（耗时：0.0395秒） [XML]
Update multiple columns in SQL
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The Update table1 set (a,b,c) = (select x,y,x) syntax is an example of the use of
row-value constructors, Oracle supports this, MSSQL does not. (Connect item)
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Is it possible to clone html element objects in JavaScript / JQuery?
...od:
// Create a clone of element with id ddl_1:
let clone = document.querySelector('#ddl_1').cloneNode( true );
// Change the id attribute of the newly created element:
clone.setAttribute( 'id', newId );
// Append the newly created element on element p
document.querySelector('p').appendChild( cl...
filtering NSArray into a new NSArray in Objective-C
...y indexesOfObjectsPassingTest:] or write your own category to add a handy -select: or -filter: method (example).
Want somebody else to write that category, test it, etc.? Check out BlocksKit (array docs). And there are many more examples to be found by, say, searching for e.g. "nsarray block catego...
Make Vim show ALL white spaces as a character
I can't find a way to make Vim show all white spaces as a character.
All I found was about tabs, trailing spaces etc.
23 An...
Character reading from file in Python
...rom Unicode, then there's really no direct way to do so, since the Unicode characters won't necessarily exist in ASCII.
If you're trying to convert to an ASCII string, try one of the following:
Replace the specific unicode chars with ASCII equivalents, if you are only looking to handle a few spe...
Format XML string to print friendly XML string
...hen you'll have to use this answer. But if you're using .NET 3.5 or later Charles Prakash Dasari's answer is a lot simpler.
– Simon Tewsi
Sep 4 '13 at 23:54
1
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Setting custom UITableViewCells height
...Size:14.0f] constrainedToSize:constraintSize lineBreakMode:UILineBreakModeCharacterWrap]
if ( neededSize.height <= 18)
return 45
else return neededSize.height + 45
//18 is the size of your text with the requested font (systemFontOfSize 14). if you change fonts you have a different number t...
Can you have if-then-else logic in SQL? [duplicate]
I need to do select data from a table based on some kind of priority like so:
7 Answers
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What does the double colon (::) mean in CSS?
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It means pseudo element selector. It means the element to the right doesn't exist in the normal DOM, but can be selected.
A pseudo-element is made of two colons (::) followed by the name of the pseudo-element.
Source
It was originally only a ...
Select values from XML field in SQL Server 2008
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Given that the XML field is named 'xmlField'...
SELECT
[xmlField].value('(/person//firstName/node())[1]', 'nvarchar(max)') as FirstName,
[xmlField].value('(/person//lastName/node())[1]', 'nvarchar(max)') as LastName
FROM [myTable]
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