Datatypes and Data Literals

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

Takeaways:

MySQL supports 7 datatypes: Character String, Bit String, Exact Number, Approximate Number, Date and Time, JSON, Spatial Data.
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 8.0, 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

PHP Programs and MySQL Server

Perl 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

Window Functions for Statistical Analysis

Use Index for Better Performance

Transaction Management and Isolation Levels

Locks Used in MySQL

Defining and Calling Stored Procedures

Variables, Loops and Cursors Used in Stored Procedures

System, User-Defined and Stored Procedure Variables

MySQL Server Administration

Storage Engines in MySQL Server

InnoDB Storage Engine - Primary and Secondary Indexes

Performance Tuning and Optimization

Bulk Changes on Large Tables

MySQL Server on macOS

Installing MySQL Server on Linux

Connection, Performance and Second Instance on Linux

Archived Tutorials

Full Version in PDF/EPUB