Select statement to join tables?

For a simple join:

SELECT a.*, b.*
FROM tblAlpha a, tblBeta b
WHERE (a.keyfield = b.foreignkey);

It's often smarter to do an outer join, especially if you need rows in tblAlpha to show up in your resultset even if there is no matching record in tblBeta:

SELECT a.*, b.*
FROM tblAlpha a LEFT OUTER JOIN tblBeta b ON a.keyfield = b.foreignkey;

If you want to get into the nuts and bolts of it, the MySQL doc is found at:

Was dit antwoord nuttig?

 Print dit artikel

Lees ook

What are the differences between GROUP BY and ORDER BY... The manual is not clear on this

GROUP BY is a way to sub-total your results, or perform some other "aggregate" function on them....

I'm new to MySQL, where should I start?

The best source of MySQL information is the excellent on-line manual : ...

How can I select random rows from a table?

SELECT * FROM table_name ORDER BY RAND(); Found at...

What does this error message means - Warning: Supplied argument is not a valid MySQL result resource and how do you solve it?

I think you got this message from PHP. You get this message when you are trying to access...

Does mysql support foreign keys?

The answer to this is two-fold. Yes. MySQL _DOES_ allow the creation of foreign key...