大约有 44,000 项符合查询结果（耗时：0.0550秒） [XML]
Why can't I use an alias in a DELETE statement?
... I was mainly just curious, because I normally use aliases when using SELECT and other such statements, so I instinctively did what I'm used to and was wondering why it didn't work properly.
– Ricardo Altamirano
Jun 12 '12 at 21:38
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Resharper- Find all unused classes
... find unused references of a single file by right clicking on the file and selecting the "Find Usages" option. Is there any way I can see or get the list of all the unused classes or files in my project ?
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C# using streams
...itionally, StreamReader and StreamWriter are for reading and writing TEXT (character) streams.
– 1c1cle
Feb 25 '15 at 1:44
1
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Escaping HTML strings with jQuery
... This isn't cross browser safe if your string has whitespaces and \n \r \t chars in it
– nivcaner
Dec 4 '10 at 17:31
20
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What is the simplest SQL Query to find the second largest value?
...
SELECT MAX( col )
FROM table
WHERE col < ( SELECT MAX( col )
FROM table )
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improve this answ...
How to create composite primary key in SQL Server 2008
......
Right Click on the Table you wish to create the composite key on and select Design.
Highlight the columns you wish to form as a composite key
Right Click over those columns and Set Primary Key
To see the SQL you can then right click on the Table > Script Table As > Create To
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How to retrieve the current value of an oracle sequence without increment it?
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SELECT last_number
FROM all_sequences
WHERE sequence_owner = '<sequence owner>'
AND sequence_name = '<sequence_name>';
You can get a variety of sequence metadata from user_sequences, all_sequences and dba_...
Specify pane percentage in tmuxinator project
...e preset layouts (such as main-vertical). From the man page:
In addition, select-layout may be used to apply a previously used layout -
the list-windows command displays the layout of each window in a form
suitable for use with select-layout. For example:
$ tmux list-windows
0: ks...
There is no ListBox.SelectionMode=“None”, is there another way to disable selection in a listbox?
How do I disable selection in a ListBox?
16 Answers
16
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Entity Framework: There is already an open DataReader associated with this Command
...al commands executed on single connection (or single command with multiple selects) while next DataReader is executed before first one has completed the reading. The only way to avoid the exception is to allow multiple nested DataReaders = turn on MultipleActiveResultSets. Another scenario when this...