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How can I remove duplicate rows?
...way to remove duplicate rows from a fairly large SQL Server table (i.e. 300,000+ rows)?
38 Answers
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What do ellipsis […] mean in a list?
...u know this, and to inform that it can't be represented! Take a look at @6502's answer to see a nice picture showing what's happening.
Now, regarding the three new items after your edit:
This answer seems to cover it
Ignacio's link describes some possible uses
This is more a topic of data structu...
How to make DialogFragment width to Fill_Parent
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savepopulationsavepopulation
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What reason is there to use null instead of undefined in JavaScript?
...ff like if(x) ... . Stop it. !x will evaluate to true for an empty string, 0, null, NaN - ie things you probably don't want. If you want to write javascript that isn't awful, always use triple equals === and never use null (use undefined instead). It'll make your life way easier.
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Using sed to mass rename files
...ge p5-file-rename), or other systems with perl rename (prename):
rename s/0000/000/ F0000*
or on systems with rename from util-linux-ng, such as RHEL:
rename 0000 000 F0000*
That's a lot more understandable than the equivalent sed command.
But as for understanding the sed command, the sed man...
Pretty print in MongoDB shell as default
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edited Oct 28 '13 at 10:46
answered Feb 5 '12 at 3:19
S...
how to show lines in common (reverse diff)?
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answered Apr 14 '09 at 5:41
Dan LewDan Lew
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BLE协议—广播和扫描 - 创客硬件开发 - 清泛IT社区，为创新赋能！
...点通信。广播访问地址广播包：广播包Access Address 固定为0x8E89BED6，广播包只能在广播信道（channel）上传输，即只能在37/38/39信道上传输（注：从蓝牙5.0开始广播包可以在其它信道上传输）。广播包发送给附近所有的observer（扫描...
Check if table exists in SQL Server
...e the ultimate discussion on how to check if a table exists in SQL Server 2000/2005 using SQL Statements.
28 Answers
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Auto expand a textarea using jQuery
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answered Jun 1 '10 at 8:31
ReigelReigel
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