大约有 13,000 项符合查询结果(耗时:0.0398秒) [XML]

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SQL Server dynamic PIVOT query?

... @cols AS NVARCHAR(MAX), @query AS NVARCHAR(MAX); SET @cols = STUFF((SELECT distinct ',' + QUOTENAME(c.category) FROM temp c FOR XML PATH(''), TYPE ).value('.', 'NVARCHAR(MAX)') ,1,1,'') set @query = 'SELECT date, ' + @cols + ' from (...
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Select Multiple Fields from List in Linq

... Anonymous types allow you to select arbitrary fields into data structures that are strongly typed later on in your code: var cats = listObject .Select(i => new { i.category_id, i.category_name }) .Distinct() .OrderByDescending(i => i.c...
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How to make HTML Text unselectable [duplicate]

I would like to add text to my webpage as a label and make it unselectable. 4 Answers ...
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Sql Server string to date conversion

...what you're looking for. It wont be hard to adapt: Declare @d datetime select @d = getdate() select @d as OriginalDate, convert(varchar,@d,100) as ConvertedDate, 100 as FormatValue, 'mon dd yyyy hh:miAM (or PM)' as OutputFormat union all select @d,convert(varchar,@d,101),101,'mm/dd/yy' union al...
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SQL JOIN and different types of JOINs

... There are relatively new LATERAL JOIN .. SELECT * FROM r1, LATERAL fx(r1) – Pavel Stehule Jul 30 '13 at 11:52 13 ...
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When should I use cross apply over inner join?

...APPLY works better on things that have no simple JOIN condition. This one selects 3 last records from t2 for each record from t1: SELECT t1.*, t2o.* FROM t1 CROSS APPLY ( SELECT TOP 3 * FROM t2 WHERE t2.t1_id = t1.id ORDER BY t2.ran...
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Is it possible to specify condition in Count()?

...an use the fact that the count aggregate only counts the non-null values: select count(case Position when 'Manager' then 1 else null end) from ... You can also use the sum aggregate in a similar way: select sum(case Position when 'Manager' then 1 else 0 end) from ... ...
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jQuery - select all text from a textarea

...can I make it so when you click inside a textarea, its entire content gets selected? 6 Answers ...
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Implications of foldr vs. foldl (or foldl')

...lue". I.e. remove the word "on". (Stackoverflow wouldn't let me submit a 2 char change!). – Lqueryvg Nov 26 '14 at 22:34 ...
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Add a number to each selection in Sublime Text 2, incremented once per selection

... M represents the step size which will be added to the index for each selection. P must be > 0 and will be used to pad the index with leading zeroes. share | improve this answer ...