大约有 40,000 项符合查询结果(耗时:0.0378秒) [XML]

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How do I list all the columns in a table?

... For Oracle (PL/SQL) SELECT column_name FROM user_tab_cols WHERE table_name = 'myTableName' For MySQL SHOW COLUMNS FROM table_name share | i...
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How to pass an array into a SQL Server stored procedure

...WithEmployees @List AS dbo.IDList READONLY AS BEGIN SET NOCOUNT ON; SELECT ID FROM @List; END GO Now in your C# code: // Obtain your list of ids to send, this is just an example call to a helper utility function int[] employeeIds = GetEmployeeIds(); DataTable tvp = new DataTable(); tvp.C...
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LEFT OUTER JOIN in LINQ

...c.Category equals p.Category into ps from p in ps.DefaultIfEmpty() select new { Category = c, ProductName = p == null ? "(No products)" : p.ProductName }; share | improve this answer ...
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Unbound classpath container in Eclipse

... or 4. goto Properties -> Java Build Path -> Libraries Tab -> Select the erroneous system library -> Edit (On the right) -> Select alternate JRE -> Finish. – Rajkiran Jun 26 '14 at 12:11 ...
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Maximum number of characters using keystrokes A, Ctrl+A, Ctrl+C and Ctrl+V

...rate through for i up to n, doing two things: pressing A once and pressing select all + copy followed by paste j times (actually j-i-1 below; note the trick here: the contents are still in the clipboard, so we can paste it multiple times without copying each time). We only have to consider up to 4 c...
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Max or Default?

...d, you can get around this limitation by casting to a nullable within your select. My VB is a little rusty, but I think it'd go something like this: Dim x = (From y In context.MyTable _ Where y.MyField = value _ Select CType(y.MyCounter, Integer?)).Max Or in C#: var x = (from y...
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What do I need to do to get Internet Explorer 8 to accept a self signed certificate?

... certificate.”, choose “Continue to this website (not recommended).” Select Tools➞Internet Options. Select Security➞Trusted sites➞Sites. Confirm the URL matches, and click “Add” then “Close”. Close the “Internet Options” dialog box with either “OK” or “Cancel”. Refres...
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How to paste over without overwriting register

Does anyone know of a way to paste over a visually selected area without having the selection placed in the default register? ...
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How to select date without time in SQL

When I select date in SQL it is returned as 2011-02-25 21:17:33.933 . But I need only the Date part, that is 2011-02-25 . How can I do this? ...
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How to drop SQL default constraint without knowing its name?

...MySchema' set @table_name = N'Department' set @col_name = N'ModifiedDate' select @Command = 'ALTER TABLE ' + @schema_name + '.[' + @table_name + '] DROP CONSTRAINT ' + d.name from sys.tables t join sys.default_constraints d on d.parent_object_id = t.object_id join sys.columns c on c.object_id ...