大约有 47,000 项符合查询结果(耗时:0.0380秒) [XML]

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How can I select the first day of a month in SQL?

I just need to select the first day of the month of a given datetime variable. 30 Answers ...
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How do you remove all the options of a select box and then add one option and select it with jQuery?

Using core jQuery, how do you remove all the options of a select box, then add one option and select it? 24 Answers ...
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Oracle SELECT TOP 10 records

I have an big problem with an SQL Statement in Oracle. I want to select the TOP 10 Records ordered by STORAGE_DB which aren't in a list from an other select statement. ...
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Simple way to transpose columns and rows in SQL?

...3, 5), ('Blue', 2, 2, 9, 1); Union All, Aggregate and CASE Version: select name, sum(case when color = 'Red' then value else 0 end) Red, sum(case when color = 'Green' then value else 0 end) Green, sum(case when color = 'Blue' then value else 0 end) Blue from ( select color, Paul value...
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Can someone explain collection_select to me in clear, simple terms?

I am going through the Rails API docs for collection_select and they are god-awful. 2 Answers ...
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How can I convert comma separated string into a List

... Here is one way of doing it: List<int> TagIds = tags.Split(',').Select(int.Parse).ToList(); share | improve this answer | follow | ...
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How to split a comma-separated value to columns

...TRING(@string, @pos, @len) INSERT INTO @out_put ([value]) SELECT LTRIM(RTRIM(@value)) AS [column] SET @pos = CHARINDEX(@delimiter, @string, @pos + @len) + 1 END RETURN END share |...
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Select arrow style change

I'm trying to replace the arrow of a select with a picture of my own. I'm including the select in a div with the same size, I set the background of the select as transparent and I'm including a picture(with the same size as the arrow) in the right top corner of the div as background. ...
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Difference between Select and ConvertAll in C#

... Select is a LINQ extension method and works on all IEnumerable<T> objects whereas ConvertAll is implemented only by List<T>. The ConvertAll method exists since .NET 2.0 whereas LINQ was introduced with 3.5. You s...
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T-SQL: Opposite to string concatenation - how to split string into multiple records [duplicate]

...12)) RETURNS table AS RETURN ( WITH Pieces(pn, start, stop) AS ( SELECT 1, 1, CHARINDEX(@sep, @s) UNION ALL SELECT pn + 1, stop + 1, CHARINDEX(@sep, @s, stop + 1) FROM Pieces WHERE stop > 0 ) SELECT pn, SUBSTRING(@s, start, CASE WHEN stop > 0 THE...