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Nginx url重写rewrite实例详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...inx_url_rewrite在nginx中实现url重写，学习rewrite的具体用法，包括301重定向的内容等，希望对大家有所帮助。nginx rewrite 实现二级域名跳转
当访问http://www.jbyuan.com跳转到http://www.jbyuan.com/nvxingjiankang/
方法一：
这种方法浏览器地址会...
How to truncate string using SQL server
i have large string in SQL Server. I want to truncate that string to 10 or 15 character
6 Answers
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Does MS SQL Server's “between” include the range boundaries?
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@craig, that's true, as long as you are using SQL 2008 or higher, which is when the Date datatype was introduced. Also, that syntax will convert that value for every single row, so won't be able to use any indexes on that field (if that is a concern).
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select、poll、epoll之间的区别总结[整理] - C/C++ - 清泛网 - 专注C/C++及内核技术
...就行了，这节省了大量的CPU时间。这就是回调机制带来的性能提升。
（2）select，poll每次调用都要把fd集合从用户态往内核态拷贝一次，并且要把current往设备等待队列中挂一次，而epoll只要一次拷贝，而且把current往等待队列上...
Unable to begin a distributed transaction
I'm trying to run SQL against a linked server, but I get the errors below :
9 Answers
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Is there any difference between GROUP BY and DISTINCT
I learned something simple about SQL the other day:
26 Answers
26
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What is the difference between a stored procedure and a view?
...ing from those tables A LOT... instead of doing the join in EVERY piece 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 b...
OR is not supported with CASE Statement in SQL Server
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This really stinks- t-sql can't handle an "or" in a case statement. Come on Microsoft time to grow up from the toy database status.
– Rich Bianco
Jan 11 '18 at 17:46
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How to format a java.sql Timestamp for displaying?
How do I formate a java.sql Timestamp to my liking ? ( to a string, for display purposes)
7 Answers
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SQL RANK() versus ROW_NUMBER()
I'm confused about the differences between these. Running the following SQL gets me two idential result sets. Can someone please explain the differences?
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