MySQL Tutorials - Herong's Tutorial Examples - Version 4.20, by Dr. Herong Yang

MySQL Tutorials - Herong's Tutorial Examples

∟Datatypes and Data Literals

This chapter provides tutorial notes on datatypes. Topics include introduction of 5 datatypes supported in SQL-92 and MySQL; binary representations of each datatype; data literals; literal evaluations.

Introduction of Datatype

Data Binary Representations

Data Literals

Data Literal Evaluation

Character String Literal Evaluation Examples

Hex String Literal Evaluation Examples

Numeric Literal Evaluation Examples

Conclusion:

• MySQL supports 5 datatypes: Character String, Bit String, Exact Number, Approximate Number, Date and Time.
• MySQL supports 6 types of literals: Character String, Hex String, Hex String, Date and Time, Time Interval, Null.
• One data literals can be evaluated into values of different datatypes based on expression contexts.

All notes and examples in chapter are tested with MySQL 5.7, 5.6, 5.0 and 4.0 servers.

Table of Contents

 About This Book

 Introduction of SQL

 MySQL Introduction and Installation

 Introduction of MySQL Programs

 Perl Programs and MySQL Servers

 PHP Programs and MySQL Servers

 Java Programs and MySQL Servers

►Datatypes and Data Literals

 Operations and Expressions

 Character Strings and Bit Strings

 Commonly Used Functions

 Table Column Types for Different Types of Values

 Using DDL to Create Tables and Indexes

 Using DML to Insert, Update and Delete Records

 Using SELECT to Query Database

 Transaction Management and Isolation Levels

 Locks Used in MySQL

 Defining and Calling Stored Procedures

 Variables, Loops and Cursors Used in Stored Procedures

 Outdated Tutorials

 References

 PDF Printing Version

Datatypes and Data Literals - Updated in 2015, by Dr. Herong Yang