大约有 37,000 项符合查询结果（耗时：0.0391秒） [XML]
Why do we need entity objects? [closed]
... terms of Customers, Orders and Items, not a technology like DataSets, DataTables and DataRows...cuz who knows how long those will be around.
I agree that there is always a certain amount of coupling, but I prefer that coupling to reach upwards rather than downwards. I can tweak the limbs and le...
What is Domain Driven Design?
... these requirements with considering the relationships between classes and tables and in fact their design were based on database tables relationships it is not old but it has some problems:
In big projects with complex requirements it is not useful although this is a great way of design for smal...
Oracle SQL escape character (for a '&')
...t the define character to something other than &
SET DEFINE ~
create table blah (x varchar(20));
insert into blah (x) values ('blah&amp');
select * from blah;
X
--------------------
blah&amp
...
How can I stop float left?
...iv>.
Then add this CCS:
.row::after {content: ""; clear: both; display: table;}
share
|
improve this answer
|
What are the main performance differences between varchar and nvarchar SQL Server data types?
...)
size needed for tempdb
performance of triggers (for inserted and deleted tables that are stored in tempdb)
performance of row versioning (if using SNAPSHOT ISOLATION, since the version store is in tempdb)
ability to get new disk space when the CFO says that they just spent $1 million on a SAN last...
TLSF源码及算法介绍 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
... difference
* on my core2 processor. This also makes the code more portable.
* - Moved defines/typedefs from tlsf.h to tlsf.c
* - Changed MIN_BLOCK_SIZE to sizeof (free_ptr_t) and BHDR_OVERHEAD to
* (sizeof (bhdr_t) - MIN_BLOCK_SIZE). This does not change the fact
* that the minu...
What is the difference between NTFS Junction Points and Symbolic Links?
...ts, but Junction Points most definitely are not Symbolic Links! Oh and the table is wrong on one count also. The target of a Junction Point must exist upon creation, but it may indeed be removed later on.
– 0xC0000022L
Oct 22 '18 at 11:50
...
How to find out client ID of component for ajax update/render? Cannot find component with expression
The following code is inspired from PrimeFaces DataGrid + DataTable Tutorials and put into a <p:tab> of a <p:tabView> residing in a <p:layoutUnit> of a <p:layout> . Here is the inner part of the code (starting from p:tab component); the outer part is trivial.
...
When should I use UNSIGNED and SIGNED INT in MySQL?
...ned can store negative numbers (i.e., may have a negative sign).
Here's a table of the ranges of values each INTEGER type can store:
Source: http://dev.mysql.com/doc/refman/5.6/en/integer-types.html
UNSIGNED ranges from 0 to n, while signed ranges from about -n/2 to n/2.
In this case, you have ...
Can someone copyright a SQL query? [closed]
... write a full description of what the query needs to do, including all the tables, fieldnames etc., and post that here. Someone here is bound to be able to write a new version of the query that is not copyright your developer, and you can edit it each year to your hearts content.
...