Therefore, we should use int for storage, and perform some processing on the id during display, so that it is easy to tell which table the id belongs.
A database table usually has an auto-incrementing primary key named id, whose field type is
DescriptionGive a dictionary with a total number of characters not exceeding 1,000,000 (the dictionary's word order is not dictionary) and no more than 1000 prefixes with a length of not more than 1000, the output dictionary matches the prefix, and
1. prefix-list Parsing of prefix list2.2.2.0/242.2.2.0/252.2.2.0/26ACL can only control network number, cannot control maskAccess-list 1 Permit 2.2.2.0 0.0.0.255This ACL does not match exactly to 2.2.2.0/24,2.2.2.0/25 and 2.2.2.0/26 are also
From: http://blog.csdn.net/sun2043430/article/details/8832496
Preface
Code for this article:
Http://download.csdn.net/detail/sun2043430/5286986
Steps for implementing the AC algorithm Prefix Tree
Step 1 create a Prefix Tree
Step 2: Set the
The prefix index of MySQL is similar to that of Oracle.
MySQL has an interesting index type called prefix index. It can index the front part of a text field separately to reduce the index size.
In fact,Oracle has similar implementations. For text,
Original link: http://www.iteye.com/topic/1133941Symptoms:With the Eclipse win 64-bit version, both Indigo and Kepler have been recreated and have been tried and reproduced using Tomcat 6.0.39,jdk1.6.u45 and 1.7u45.The repro step is simple, it is
Configure the global routing prefix in ASP. NET Core MVC and coremvc
Configure the global routing prefix in ASP. NET Core MVC
Preface
Hello everyone, today we will introduce a new feature of ASP. NET Core MVC and add a unified prefix to global
asp.net Core MVC configuration global route prefix
Objective
Hello everyone, today we introduce a new feature of ASP.net Core MVC, which adds a unified prefix to global routing. Strictly speaking, it is not a new feature, but it is unique to core
Slow query caused by incorrect MySQL prefix index bitsCN.com
Slow query caused by incorrect MySQL prefix index
The front-end time is related to a DB Project. alanc reports a query. using indexes is much slower than not using indexes. So I followed
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