大约有 48,000 项符合查询结果(耗时:0.0656秒) [XML]

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Cannot resolve the collation conflict between “SQL_Latin1_General_CP1_CI_AS” and “Latin1_General_CI_

...eck what collations each column in your table(s) has by using this query: SELECT col.name, col.collation_name FROM sys.columns col WHERE object_id = OBJECT_ID('YourTableName') Collations are needed and used when ordering and comparing strings. It's generally a good idea to have a sin...
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How to express a NOT IN query with ActiveRecord/Rails?

...rums, lambda { |forums| { :conditions => ['forum_id not in (?)', forums.select(&:id).join(',')] } # in your controller Topic.not_in_forums(@forums) share | improve this answer | ...
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Visual Studio 2013 Missing Convert To Web Application

... It's been moved to the 'Project' menu towards the bottom after selecting the project or folder: Sources: http://connect.microsoft.com/VisualStudio/feedback/details/806246/visual-studio-2013-web-forms-conver-to-web-applications ...
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What's the difference between disabled=“disabled” and readonly=“readonly” for HTML form input fields

... Not all form elements have a readonly attribute. Most notable, the <SELECT> , <OPTION> , and <BUTTON> elements do not have readonly attributes (although they both have disabled attributes) Browsers provide no default overridden visual feedback that the form element is read ...
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How to import an excel file in to a MySQL database

...r Excel table into the sales table of a MySQL database named mydatabase. Select the relevant cells: Paste into Mr. Data Converter and select the output as MySQL: Change the table name and column definitions to fit your requirements in the generated output: CREATE TABLE sales ( id INT NOT N...
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Favourite performance tuning tricks [closed]

...n-optimal query plan Break up the Join Can you break up the join? Pre-select foreign keys into a temporary table Do half the join and put results in a temporary table Are you using the right kind of temporary table? #temp tables may perform much better than @table variables with large volum...
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find vs find_by vs where

...irb(main):037:0> @kit = Kit.find_by(number: "3456") Kit Load (0.9ms) SELECT "kits".* FROM "kits" WHERE "kits"."number" = '3456' LIMIT 1 => #<Kit id: 1, number: "3456", created_at: "2015-05-12 06:10:56", updated_at: "2015-05-12 06:10:56", job_id: nil> irb(main):038:0> @kit.upd...
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How to write a simple Html.DropDownListFor()?

...%= Html.DropDownListFor(n => n.MyColorId, new SelectList(Colors, "ColorId", "Name")) %> share | improve this answer | follow |...
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Warning: The Copy Bundle Resources build phase contains this target's Info.plist file

...Resources build phase or make it a target member. To resolve this warning, select your Info.plist from the Copy Bundle Resource build phase as shown in Figure 1, then click the Remove (–) button to delete it from the phase. ...
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Eclipse - java.lang.ClassNotFoundException

...something didn't know eclipse-junit could do: highlighting test method and selecting RunAs-Junit only runs that particular test-method, not the entire test! No more @Ignore all over the place and gui shortcuts! – bgs Oct 25 '12 at 14:46 ...