rowid in sqlite

I believe that bloggers or passers-by who read my blog will think that SQLite is small, easy to learn, and simple. Next, I will upload my notes to my blog to help some people and myself. Because I know this is the case. A few days ago, I saw someone

In the query results of SQLite display line number, you can use the Select rowID as RowNumber, * from Wsclanguage;Select rowID as RowNumber, * from Wsclanguage ORDER by Createtime;SELECT DISTINCT keyword from articlecontent;/* Select

SQLite database for Android Development SQLite database for Android Development Please respect others' labor achievements. Reprinted with the source: detailed explanation of SQLite database for Android

Declared Integer primary key Is considered to be self-increasing When designing a table with SQLite, I suddenly thought of a problem, that is, in the table I designed, each table hasYour own integer id value as the primary key. In fact, you can

The design and function of each module of SQLite kernel is grasped from the global angle. SQLite uses a hierarchical, modular design that makes it highly scalable and portable. Moreover, the architecture of SQLite is not very different from the

Database SQLite plays an important role in iOS, this article mainly describes the concurrency of SQLite, transactions and common corruption problems, the following will briefly describe the further packaging of SQLite third-party library Fmdb.The

SQLite foreign KEY (Foreign key) supportFOREIGN KEY constraints are supported starting from SQLite 3.6.19. (The SQLite version of Ubuntu 10.04 is 3.6.22, and the SQLite version of Debian 6.0 is 3.7.0)A FOREIGN KEY constraint is used to enforce a

IntroductionIn this article, there is a query operation for a 41G size database that contains millions records, and if you take advantage of the index, you can reduce the operation time from 37s to 0.2s.So what is an index? What is the rationale for

Preface: This section is the subsequent part of the previous section. These two sections are the design and functions of each module of the SQLite kernel from a global perspective. Only by grasping SQLite globally can we better understand the

I chose sqlite as the database for the SQL language getting started exercise, so I also chose AAuto, a lightweight programming tool that encapsulates the sqlite library, which is easy to use and quickly writes out a tool with an interface, if you