大约有 40,000 项符合查询结果(耗时:0.0309秒) [XML]

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SQL Switch/Case in 'where' clause

... declare @locationType varchar(50); declare @locationID int; SELECT column1, column2 FROM viewWhatever WHERE @locationID = CASE @locationType WHEN 'location' THEN account_location WHEN 'area' THEN xxx_location_area WHEN 'division' THEN xxx_location_division END...
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How do I find numeric columns in Pandas?

... You could use select_dtypes method of DataFrame. It includes two parameters include and exclude. So isNumeric would look like: numerics = ['int16', 'int32', 'int64', 'float16', 'float32', 'float64'] newdf = df.select_dtypes(include=numer...
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How can I add an item to a SelectList in ASP.net MVC

Basically I am looking to insert an item at the beginning of a SelectList with the default value of 0 and the Text Value of " -- Select One --" ...
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Hidden Features of Xcode

...m working with a large or unfamiliar project. To show the Favorites Bar, select the following menu option: View > Layout > Show Favorites Bar share edited Apr 4 '11...
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XPath: select text node

... XML: <node>Text1<subnode/>text2</node> How do I select either the first or the second text node via XPath? Use: /node/text() This selects all text-node children of the top element (named "node") of the XML document. /node/text()[1] This selects the first text-nod...
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Select which href ends with some string

Is it possible using jQuery to select all <a> links which href ends with "ABC"? 5 Answers ...
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How do I perform an IF…THEN in an SQL SELECT?

How do I perform an IF...THEN in an SQL SELECT statement? 30 Answers 30 ...
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Error 1046 No database Selected, how to resolve?

...ation. If you're trying to do this via MySQL Workbench... ...you need to select the appropriate database/catalog in the drop down menu found above the :Object Browser: tab. You can specify the default schema/database/catalog for the connection - click the "Manage Connections" options under the SQL...
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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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How do I select the parent form based on which submit button is clicked?

... You can select the form like this: $("#submit").click(function(){ var form = $(this).parents('form:first'); ... }); However, it is generally better to attach the event to the submit event of the form itself, as it will tri...