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Multi-statement Table Valued Function vs Inline Table Valued Function
...lued function (MSTVF) even if they both simply execute a SELECT statement. SQL Server will treat an ITVF somewhat like a VIEW in that it will calculate an execution plan using the latest statistics on the tables in question. A MSTVF is equivalent to stuffing the entire contents of your SELECT statem...
How do you copy a record in a SQL table but swap out the unique id of the new row?
... have to specify. It's better than the other way around anyway. :-)
I use SQL Server. You may want to use "CREATE TABLE" and "UPDATE TABLE" at row 1 and 2.
Hmm, I saw that I did not really give the answer that he wanted. He wanted to copy the id to another column also. But this solution is nice for...
怎么往SetTimer的回调函数传递参数 - C/C++ - 清泛网 - 专注C/C++及内核技术
...hMessage的循环，由于还是原来的线程，所以它GetMessage将还包括WM_TIMER，另外还有消息框自己的一些关于界面的消息，比如WM_PAINT，消息框 的出现只是在系统中又注册了一些需要的消息，就是消息框的关于界面事件的消息。WM_TIMER...
How do I add more members to my ENUM-type column in MySQL?
The MySQL reference manual does not provide a clearcut example on how to do this.
7 Answers
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Should MySQL have its timezone set to UTC?
...ill choose for his/her server and how he/she will store date and time.
MySQL Timezone Cheatsheet
Notes:
Changing the timezone will not change the stored datetime or
timestamp, but it will select a different datetime from
timestamp columns
Warning! UTC has leap seconds, these look like '2012-06...
程序员之网络安全系列（五）：数字证书以及12306的证书问题 - 更多技术 - ...
...natures), so your connection may not be private.），我猜他们是为了性能？？
但是，就算浏览器地址栏的锁不能变绿，我们还得订票不是吗？
我觉得12306可能需要一个操作系统内置的认证机构来发一个证书，不然普通的用户根本不知道怎...
How do I check if a Sql server string is null or empty
...
In SQL Server 2012 you have IIF, e.g you can use it like
SELECT IIF(field IS NULL, 1, 0) AS IsNull
The same way you can check if field is empty.
sha...
C# equivalent of the IsNull() function in SQL Server
In SQL Server you can use the IsNull() function to check if a value is null, and if it is, return another value. Now I am wondering if there is anything similar in C#.
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Is the NOLOCK (Sql Server hint) bad practice?
...cases rows are returned which do not match my query. (see blogs.msdn.com/b/sqlcat/archive/2007/02/01/… , found from another SO q'n on this topic)
– Andrew Hill
Jul 29 '15 at 1:58
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SQL “select where not in subquery” returns no results
...e methods in more detail:
NOT IN vs. NOT EXISTS vs. LEFT JOIN / IS NULL: SQL Server
NOT IN vs. NOT EXISTS vs. LEFT JOIN / IS NULL: PostgreSQL
NOT IN vs. NOT EXISTS vs. LEFT JOIN / IS NULL: Oracle
NOT IN vs. NOT EXISTS vs. LEFT JOIN / IS NULL: MySQL
There are three ways to do such a query:
LE...