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For 2021 - online Python 3 training - see ((here)).

Our plans were to retire in summer 2020 and see the world, but Coronavirus has lead us into a lot of lockdown programming in Python 3 and PHP 7.
We can now offer tailored online training - small groups, real tutors - works really well for groups of 4 to 14 delegates. Anywhere in the world; course language English.

Please ask about private 'maintenance' training for Python 2, Tcl, Perl, PHP, Lua, etc.
MySQL example - table joins
SQL Primer as Used in MySQL example from a Well House Consultants training course
More on SQL Primer as Used in MySQL [link]

This example is described in the following article(s):
   • Which database should I use? MySQL v SQLite - [link]

Source code: seeds.mysql Module: S152
drop database if exists jamie;
create database jamie;
use jamie;

create table aisles(
        aid int primary key not null,
        title text);
create table products(
        pid int primary key not null,
        aid int,
        name text,
        colour text);

insert into aisles values (1,"Vegetables");
insert into aisles values (2,"Sweeties");
insert into aisles values (3,"Petfood");

insert into products values (101,1,"Carrots","Orange");
insert into products values (102,1,"Sprouts","Green");
insert into products values (103,2,"Foxmints","Clear");
insert into products values (104,6,"Pizza","Red");

select * from aisles join products on aisles.aid = products.aid;
select * from aisles left join products on aisles.aid = products.aid;
select * from aisles right join products on aisles.aid = products.aid;

select * from aisles left join products on aisles.aid = products.aid where pid is NULL;
Learn about this subject
This module and example are covered on the following public courses:
 * Deploying LAMP - Linux, Apache, MySQL, Perl/PHP
 * Linux Web Server
 * MySQL
 * Deploying Java Applications on Linux / Unix
Also available on on site courses for larger groups

Books covering this topic
Yes. We have over 700 books in our library. Books covering are listed here and when you've selected a relevant book we'll link you on to Amazon to order.

Other Examples
This example comes from our "SQL Primer as Used in MySQL" training module. You'll find a description of the topic and some other closely related examples on the "SQL Primer as Used in MySQL" module index page.

Full description of the source code
The complete training module that describes this source code is availble for download (for limited use) from our download centre.

Other resources
• Our Solutions centre provides a number of longer technical articles.
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The Horse's mouth provides a daily tip or thought.
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• And there's a global index here.

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This web site is written and maintained by Well House Consultants.

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This is a sample program, class demonstration or answer from a training course. It's main purpose is to provide an after-course service to customers who have attended our public private or on site courses, but the examples are made generally available under conditions described below.

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