大约有 48,000 项符合查询结果(耗时:0.0248秒) [XML]

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Selecting text in an element (akin to highlighting with your mouse)

I would like to have users click a link, then it selects the HTML text in another element ( not an input). 16 Answers ...
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UITableView Setting some cells as “unselectable”

How can I set the UITableView's cell property to be unselectable? I don't want to see that blue selection box when the user taps on the cell. ...
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How do I use ROW_NUMBER()?

... For the first question, why not just use? SELECT COUNT(*) FROM myTable to get the count. And for the second question, the primary key of the row is what should be used to identify a particular row. Don't try and use the row number for that. If you returned Ro...
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How to select/get drop down option in Selenium 2

...converting my selenium 1 code to selenium 2 and can't find any easy way to select a label in a drop down menu or get the selected value of a drop down. Do you know how to do that in Selenium 2? ...
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SELECT DISTINCT on one column

...ou're on SQL Server 2005 or greater, you can use a CTE with ROW_NUMBER(): SELECT * FROM (SELECT ID, SKU, Product, ROW_NUMBER() OVER (PARTITION BY PRODUCT ORDER BY ID) AS RowNumber FROM MyTable WHERE SKU LIKE 'FOO%') AS a WHERE a.RowNumber = 1 ...
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how to use ng-option to set default value of select element

I've seen the documentation of the Angular select directive here: http://docs.angularjs.org/api/ng.directive:select . I can't figure how to set the default value. This is confusing: ...
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COUNT(*) vs. COUNT(1) vs. COUNT(pk): which is better? [duplicate]

...for all your queries that need to count everything, even for joins, use * SELECT boss.boss_id, COUNT(subordinate.*) FROM boss LEFT JOIN subordinate on subordinate.boss_id = boss.boss_id GROUP BY boss.id But don't use COUNT(*) for LEFT joins, as that will return 1 even if the subordinate table doe...
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How to get a date in YYYY-MM-DD format from a TSQL datetime field?

... SELECT CONVERT(char(10), GetDate(),126) Limiting the size of the varchar chops of the hour portion that you don't want. share | ...
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MySQL select one column DISTINCT, with corresponding other columns

I want to select DISTINCT results from the FirstName column, but I need the corresponding ID and LastName . 12 Answe...
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Rails: select unique values from a column

... Model.select(:rating) Result of this is a collection of Model objects. Not plain ratings. And from uniq's point of view, they are completely different. You can use this: Model.select(:rating).map(&:rating).uniq or this (mo...