大约有 47,000 项符合查询结果(耗时:0.0432秒) [XML]

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Add primary key to existing table

...PMID) edit: you can find the constraint name by using the query below: select OBJECT_NAME(OBJECT_ID) AS NameofConstraint FROM sys.objects where OBJECT_NAME(parent_object_id)='Persion' and type_desc LIKE '%CONSTRAINT' sh...
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powershell - extract file name and extension

...tated, use the BaseName and Extension properties: PS C:\> dir *.xlsx | select BaseName,Extension BaseName Extension -------- --------- StackOverflow.com Test Config .xlsx If you are given the file name as part of string...
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Can you get the column names from a SqlDataReader?

...GetName(i)); } or var columns = Enumerable.Range(0, reader.FieldCount).Select(reader.GetName).ToList(); share | improve this answer | follow | ...
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How to change package name of an Android Application

... Right-click on the package name (src/com.android.gesture.builder). Select Refactor > Rename and change the name, for example to com.android.gestureNEW.builder. Open the manifest file. Inside the <manifest> tag, change the package name to com.android.gestureNEW.builder. ...
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SQL is null and = null [duplicate]

...e t (x int, y int); insert into t values (null, null), (null, 1), (1, 1); select 'x = null' as test , x, y from t where x = null union all select 'x != null', x, y from t where x != null union all select 'not (x = null)', x, y from t where not (x = null) union all select 'x = y', x, y from t where ...
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Concatenate multiple result rows of one column into one, group by another column [duplicate]

...Simpler with the aggregate function string_agg() (Postgres 9.0 or later): SELECT movie, string_agg(actor, ', ') AS actor_list FROM tbl GROUP BY 1; The 1 in GROUP BY 1 is a positional reference and a shortcut for GROUP BY movie in this case. string_agg() expects data type text as input. Other ...
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PowerShell script to return versions of .NET Framework on a machine?

...ame Version,Release -EA 0 | Where { $_.PSChildName -match '^(?!S)\p{L}'} | Select PSChildName, Version, Release Based on the MSDN article, you could build a lookup table and return the marketing product version number for releases after 4.5: $Lookup = @{ 378389 = [version]'4.5' 378675 = [...
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Input widths on Bootstrap 3

Update again: I am closing this question by selecting the top answer to keep people from adding answers without really understanding the question. In reality there is no way to do it with the build in functionality without using grid or adding extra css. Grids do not work well if you are dealing wi...
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How to convert a selection to lowercase or uppercase in Sublime Text

I have several strings selected in a file in Sublime Text and I want to convert them all to lowercase. 5 Answers ...
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What's is the difference between train, validation and test set, in neural networks?

...he validation data actually affects the weight configuration indirectly to select the weight configuration. This is where the Test set comes in. This set of data is never used in the training process. Once a model is selected based on the validation set, the test set data is applied on the network m...