大约有 47,000 项符合查询结果(耗时:0.0921秒) [XML]

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How do I obtain a Query Execution Plan in SQL Server?

...ution plan in SQL Server Management Studio, or right click on the plan and select "Save Execution Plan As ..." to save the plan to a file in XML format. Method 2 - Using SHOWPLAN options This method is very similar to method 1 (in fact this is what SQL Server Management Studio does internally), ho...
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How do you convert a DataTable into a generic list?

...ataTable //using lamdaexpression emp = (from DataRow row in dt.Rows select new Employee { _FirstName = row["FirstName"].ToString(), _LastName = row["Last_Name"].ToString() }).ToList(); share ...
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Copy a table from one database to another in Postgres

... follow these steps: In pgAdmin, right click the table you want to move, select "Backup" Pick the directory for the output file and set Format to "plain" Click the "Dump Options #1" tab, check "Only data" or "only Schema" (depending on what you are doing) Under the Queries section, click "Use Colu...
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How to Delete using INNER JOIN with SQL Server?

...helpful for you - DELETE FROM dbo.WorkRecord2 WHERE EmployeeRun IN ( SELECT e.EmployeeNo FROM dbo.Employee e WHERE ... ) Or try this - DELETE FROM dbo.WorkRecord2 WHERE EXISTS( SELECT 1 FROM dbo.Employee e WHERE EmployeeRun = e.EmployeeNo AND .... ) ...
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How to get all Errors from ASP.Net MVC modelState?

... Using LINQ: IEnumerable<ModelError> allErrors = ModelState.Values.SelectMany(v => v.Errors); share | improve this answer | follow | ...
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Add a column to a table, if it does not already exist

...onstruct by using the sys.columns table io sys.objects. IF NOT EXISTS ( SELECT * FROM sys.columns WHERE object_id = OBJECT_ID(N'[dbo].[Person]') AND name = 'ColumnName' ) share | ...
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MySQL Results as comma separated list

... You can use GROUP_CONCAT to perform that, e.g. something like SELECT p.id, p.name, GROUP_CONCAT(s.name) AS site_list FROM sites s INNER JOIN publications p ON(s.id = p.site_id) GROUP BY p.id, p.name; share ...
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How to select the first element with a specific attribute using XPath

The XPath bookstore/book[1] selects the first book node under bookstore . 9 Answers ...
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Set selected radio from radio group with a value

... With the help of the attribute selector you can select the input element with the corresponding value. Then you have to set the attribute explicitly, using .attr: var value = 5; $("input[name=mygroup][value=" + value + "]").attr('checked', 'checked'); ...
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How do I generate random number for each row in a TSQL Select?

...mber. I'd suggest using convert(varbinary,newid()) as the seed argument: SELECT table_name, 1.0 + floor(14 * RAND(convert(varbinary, newid()))) magic_number FROM information_schema.tables newid() is guaranteed to return a different value each time it's called, even within the same batch, so usi...