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How to use NULL or empty string in SQL
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If you need it in SELECT section can use like this.
SELECT ct.ID,
ISNULL(NULLIF(ct.LaunchDate, ''), null) [LaunchDate]
FROM [dbo].[CustomerTable] ct
you can replace the null with your substitution value.
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SQL - Select first 10 rows only?
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SELECT *
FROM (SELECT ROW_NUMBER () OVER (ORDER BY user_id) user_row_no, a.* FROM temp_emp a)
WHERE user_row_no > 1 and user_row_no <11
This worked for me.If i may,i have few useful dbscripts that you can have look at
Useful Dbscripts
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我帮儿子用App Inventor 2给遥控车装了"蓝牙大脑"，手机一划车就...
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当 Canvas1.触屏拖动(起始x, 起始y, 当前x, 当前y, 触控点id)
执行 如果 当前位置_半径 > 50
则 将Ball限制在圆内
否则 将Ball位置设为(当前x, 当前y)
第三步：指令编码
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How to check if NSString begins with a certain character
... CFStringHasPrefix() can also be used on NSStrings due to "Toll Free Bridging". The performance of CFStringHasPrefix() seems to be 2-3 times better (at least when using my data set). So if you are using it in a performance sensitive area, you might want to try CFStringHasPrefix() instead.
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What is the difference between SessionState and ViewState?
...ay to track what the user is doing on the site.. across multiple pages...amid the statelessness of the Web. e.g. the contents of a particular user's shopping cart is session data. Cookies can be used for session state.
View State on the other hand is information specific to particular web page. It i...
Call a Javascript function every 5 seconds continuously [duplicate]
...d before your latest edit (after my edit) (setInterval(methodName,5000)), did not use eval. eval is only used in setInterval/setTimeout if the first parameter is passed as a string.
– Matt
Aug 25 '11 at 14:02
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Resetting a setTimeout
... @Cort3z that's because window.setTimeout returns a number (the timer's ID) and not a "timeout object".
– Dan O
Apr 30 '15 at 15:59
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Embedding Base64 Images
...ntendo DSi or Wii)
WebKit-based, such as Safari (including on iOS), Android's browser, Epiphany and Midori (WebKit is a derivative of Konqueror's KHTML engine, but Mac OS X does not share the KIO architecture so the implementations are different), as well as Webkit/Chromium-based, such as Chrome
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How do I install g++ for Fedora?
...edora Linux? I have been searching the dnf command to install g++ but didn't find anything.
9 Answers
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jQuery: Count number of list elements?
I've got a list that is generated from some server side code, before adding extra stuff to it with jQuery I need to figure out how many items are already in it.
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