Chapter
24 - MySQL
Overview
MySQL Control Panel Feature
Examples of SQL Statements
Quick Actions
Advanced Queries
Table Select
Using MySQL With CGI Scripts
References and Tutorials
Examples
of SQL Statements
Below a few examples are provided to give you an idea of what an SQL statement
looks like.
Though they have a specific structure and can perform complex operations,
SQL commands are fairly easy to understand.
For example,
-
CREATE TABLE Phonebook (
Id char(5),
Name char(50),
Telephone char(11)
);
creates a
new table in your database named Phonebook that has three
fields, Id, Name, and Telephone,
which are characters strings of length 5, 50 , and 11, respectively.
The statement
-
INSERT INTO Phonebook (Id, Name, Telephone)
VALUES (ÔAAAAAÕ, ÔJoe SmithÕ, Ô800-555-1212Õ);
adds the
data into the named fields as a new record of the Phonebook
table in your database.
The statement
-
SELECT Name, Telephone
FROM Phonebook
WHERE Id = ÔAAAAAÕ;
searches
the table Phonebook and finds the Name
and Telephone number of the customer whose Id
is equal to ‘AAAAA’.
These are, of course, simple statements. Much more complicated databases
and queries can be written using SQL, all of which are supported by MySQL.
Much of your database management will be done through the MySQL Control
Panel provided in your account administration pages and not by typing
in commands such as above. Though not needed, a working understanding
of how to read and write SQL statements is of great help. There are many
books and web sites which teach SQL
and have many more examples. If you plan on doing much database
development, it is recommended that you review them.
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