MySQL Tutorials - Herong's Tutorial Notes
Dr. Herong Yang, Version 4.10

Using SELECT to Query Database

This chapter provides tutorial notes on SELECT query statements. Topics include SELECT statement syntax, FROM clause, WHERE clause, GROUP BY clause, ORDER BY clause, JOIN table operations.

SELECT Statements

FROM Clause of a SELECT Statement

JOIN -Operations to Join Two Tables

JoinTable.sql - Example of Join Tables

WHERE Clause of a SELECT Statement

GROUP BY Clause of a SELECT Statement

ORDER BY Clause of a SELECT Statement

Conclusion:

  • SELECT statements returns data in rows and fields from base tables.
  • The FROM clause defines the base table, filter, aggregation and sorting order.
  • The WHERE clause defines filter conditions.
  • The GROUP BY clause defines aggregation rules.
  • The ORDER BY clause defines sorting orders.
  • The JOIN operation defines how two tables can be combined into a single base table.

All notes and examples in chapter are based on SQL-92 and MySQL server.

Table of Contents

 About This Book

 Introduction of SQL

 MySQL 4.0 Introduction and Installation

 Installing MySQL 5.5.15

 Installing MySQL 5.0.2 (Alpha)

 Introduction of MySQL 5.0 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

 References

 Printable Copy - PDF Version

Dr. Herong Yang, updated in 2011
Using SELECT to Query Database