大约有 40,000 项符合查询结果(耗时:0.0387秒) [XML]

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What is the difference between a stored procedure and a view?

...iece of SQL, I would define a view like: CREATE VIEW vw_user_profile AS SELECT A.user_id, B.profile_description FROM tbl_user A LEFT JOIN tbl_profile B ON A.user_id = b.user_id GO Thus, if I want to query profile_description by user_id in the future, all I have to do is: SELECT profile_descr...
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Color different parts of a RichTextBox string

...pendText(this RichTextBox box, string text, Color color) { box.SelectionStart = box.TextLength; box.SelectionLength = 0; box.SelectionColor = color; box.AppendText(text); box.SelectionColor = box.ForeColor; } } And this is how you would use it: var...
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How to sleep for five seconds in a batch file/cmd [duplicate]

...specify the timeout in seconds and the /D parameter to specify the default selection and ignore then selected choice. The one thing that might be an issue is if the user types one of the choice characters before the timeout period elapses. A partial work-around is to obfuscate the situation -- use ...
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Error during installing HAXM, VT-X not working

...this, restart the computer, when the computer started then press Esc, then select the F2 if the manufacturer is dell. Even if you have enabled the Virtualization (VT) in BIOS settings, some antivirus options prevent HAXM installation. For example: In Avast antivirus under Settings (parameters) tab ...
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Select DISTINCT individual columns in django?

I'm curious if there's any way to do a query in Django that's not a " SELECT * FROM... " underneath. I'm trying to do a " SELECT DISTINCT columnName FROM ... " instead. ...
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Visual Studio hot keys change occasionally, specifically F6 vs Ctrl-Shift-B for building. WHY?

... This is because you might have selected "General Development Settings" as your default environment settings for your Visual Studio (which usually we do on the first launch of VS after installing it as it pops up a dialogue box to choose default environment...
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SQL - Rounding off to 2 decimal places

... Could you not cast your result as numeric(x,2)? Where x <= 38 select round(630/60.0,2), cast(round(630/60.0,2) as numeric(36,2)) Returns 10.500000 10.50 share | improve ...
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How to make vim paste from (and copy to) system's clipboard?

...system clipboard. On X11 systems both registers can be used. See :help x11-selection for more details, but basically the "* is analogous to X11's _PRIMARY_ selection (which usually copies things you select with the mouse and pastes with the middle mouse button) and "+ is analogous to X11's _CLIPBOAR...
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MYSQL Truncated incorrect DOUBLE value

... Same issue for me. A 'select * from t where id = 6503' worked okay but 'update t set a = "foo" where id = 6503' resulted in ERROR 1292 (22007): Truncated incorrect DOUBLE value: '234805557438#'. id looks like integer but was a varchar. Quoting th...
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How to get an object's property's value by property name?

... Sure write-host ($obj | Select -ExpandProperty "SomeProp") Or for that matter: $obj."SomeProp" share | improve this answer | ...