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What is the use of the square brackets [] in sql statements?
I've noticed that Visual Studio 2008 is placing square brackets around column names in sql. Do the brackets offer any advantage? When I hand code T-SQL I've never bothered with them.
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jQuery: find element by text
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<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
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构建高并发高可用的电商平台架构实践 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...che)
内存数据库
Buffer、cache机制（数据库，中间件等）
2) 索引
哈希、B树、倒排、bitmap
哈希索引适合综合数组的寻址和链表的插入特性，可以实现数据的快速存取。
B树索引适合于查询为主导的场景，避免多次的IO，提高查...
Ruby: Change negative number to positive number?
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271
Using abs will return the absolute value of a number
-300.abs # 300
300.abs # 300
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Is SHA-1 secure for password storage?
...bruteforce or dictionary attack. (The same is true for successors like SHA-256.) Depending on the circumstances, a hash function which was designed to be computationally expensive (such as bcrypt) might be a better choice.
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Error “library not found for” after putting application in AdMob
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24 Answers
24
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Most efficient way to concatenate strings?
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edited Nov 22 '19 at 9:07
Yousha Aleayoub
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Selecting the first “n” items with jQuery
...ed to select just the first "n" items from the page, for example the first 20 links instead of selecting all of them with the usual
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Python/postgres/psycopg2: getting ID of row just inserted
I'm using Python and psycopg2 to interface to postgres.
3 Answers
3
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Proper URL forming with Query String and Anchor Hashtag
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152
?var=var#hash
everything after # is client side.
Also, look into url rewriting to get rid of ...