create database query

1.0 Introduction The task of the Query planner is to find the best algorithm or to say "query plan" to complete an SQL statement. As early as SQLite version 3.8.0, the component of the query planner has been rewritten so that it can run faster and

Database Query analyzer 6.03: How to Operate Domestic DM databases flexibly and quickly, db6.03  Database Query analyzer 6.03: How to Operate Domestic DM databases flexibly and quickly Magenfeng (Guangdong Union Electronic Service Co., Ltd.,

Original address: http://blog.csdn.net/zwan0518/article/details/11972853Directory (?) [-] One query optimization 1 Creating an Index 2 Configuration of the cache 3slow_query_log Analysis 4 Sub-Library sub-table

Database indexes are divided into clustered indexes and non-clustered indexes. Clustered indexes are physical indexes, that is, the physical storage order of data. The leaf node of clustered indexes is the data row itself; non-clustered indexes are

First, relational database SQLite Every application uses data, and Android apps are no exception, and Android uses Open-source, OS-independent SQL databases-sqlite. SQLite First Alpha version was born in May 2000, it is a lightweight database, its

This post is only for sharing knowledge. It is more concise (that is, a version without English) and will be published on the blog. I am reviewing this article. I hope this post will be helpful for your learning of the LINQ to SQL

1 IntroductionWith the development of hospital digitalization and informatization in China, more and more hospitals need to efficiently and automatically manage and share the generated medical images. The use of the medical image management and

1. Understand the database and create new:1) Open the database and connect to the server.2) service type without tube.3) server name: Make a point "." Indicates that the server is on the local computer and, if it is hosted on someone else's server,

create  table [dbo].[ tgongwen]  (     --tgongwen is red-headed table name    [Gid] [int]  identity  (1, 1)   not  null , --The ID number of this table, also the primary key    [ title] [varchar]  ( collate chinese_prc_ci_as ); null ,  

1. Understand the database and create new:1) Open the database and connect to the server.2) service type without tube.3) server name: Make a point "." Indicates that the server is on the local computer and, if it is hosted on someone else's server,