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How Pony (ORM) does its tricks?
Pony ORM does the nice trick of converting a generator expression into SQL. Example:
1 Answer
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Database development mistakes made by application developers [closed]
...xists--you should be using it.
It's quite common to see this failure on MySQL databases. I don't believe MyISAM supports it. InnoDB does. You'll find people who are using MyISAM or those that are using InnoDB but aren't using it anyway.
More here:
How important are constraints like NOT NULL a...
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...
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...
FAT32系统中长文件名的存储 - C/C++ - 清泛网 - 专注C/C++及内核技术
...名的环境中对短文件名中的文件名和扩展名字段作更改(包括删除，因为删除是对首字符改写E5H)，都会使长文件名形同虚设。
（长文件名如何与短文件名对应？仅靠她们之间的位置关系？）
长文件名和短文件名之间的联系...
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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How do I check if a Sql server string is null or empty
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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...
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...
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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