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Store pictures as files or in the database for a web app?
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Also, in SQL Server when you store the image as an "Image" field, this is effectively what SQL is doing - storing a pointer to the file on disk somewhere. This is how it gets around the 8KB page limit.
– Zhaph - ...
Linux反编译全攻略 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...什么都没有。这不是一个正常的程序？
接下来，使用十六进制工具 hexedit 查看程序信息。运行命令：hexedit cm2 ,显示如下：
代码:
00000000 7F 45 4C 46 01 01 01 00 4C 69 6E 75 78 00 00 00 .ELF....Linux...
00000010 02 00 03 00 01 00 ...
Store query result in a variable using in PL/pgSQL
How to assign the result of a query to a variable in PL/pgSQL, the procedural language of PostgreSQL?
5 Answers
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Are there any disadvantages to always using nvarchar(MAX)?
In SQL Server 2005, are there any disadvantages to making all character fields nvarchar(MAX) rather than specifying a length explicitly, e.g. nvarchar(255)? (Apart from the obvious one that you aren't able to limit the field length at the database level)
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IN clause and placeholders
I'm attempting to do the following SQL query within Android:
9 Answers
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Max return value if empty query
...on the result. I also think (I haven't tested this yet) that the generated SQL would use an extra subselect query by doing that, while mine would just deal with an empty set by returning null. Thanks for the upvote and feedback! ;)
– CptRobby
Nov 22 '16 at 14:3...
How do I check if an index exists on a table field in MySQL?
...Use SHOW INDEX like so:
SHOW INDEX FROM [tablename]
Docs: https://dev.mysql.com/doc/refman/5.0/en/show-index.html
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IEnumerable vs List - What to Use? How do they work?
... and possibly optimize the program. Remember how LINQ doesn't generate the SQL to query the database until you enumerate it? Consider this:
public IEnumerable<Animals> AllSpotted()
{
return from a in Zoo.Animals
where a.coat.HasSpots == true
select a;
}
public IEnum...
How do I select an entire row which has the largest ID in the table?
...ow profiles and it appears our solutions have the same performance using MySQL. For my own knowledge, do you know what DBMS has poorer performance for subselects?
– unutbu
Feb 7 '14 at 20:08
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What does collation mean?
What does collation mean in SQL, and what does it do?
9 Answers
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