Below is the example of INNER JOIN between table Customer and Member:

SELECT customer.name, member.name

FROM customer INNER JOIN member

     ON customer.member_id = member.id

Here is the magic of using WHERE syntax:

SELECT customer.name, member.name

FROM customer, member

WHERE customer.member_id = member.id

Though the syntax doesn't look shorter enough, but it will be very handy for some SQL statement that joins a lot of tables.

This trick works fine with MySQL and HSQLDB. I haven't tried on another engine yet.

Tell me if i made a mistake. thanks

At first, I thought that Switch was just only for 'equal' comparison. But actually it is more than just equal. So I did a search, and I found there is a way that can code Switch just like If. Well, I'm lazy to explain, so let's see the following sample codes of getting Grade from Score:

If statement:

$score=78;

if ($score>=85): echo "Grade A";

elseif ($score>=70): echo "Grade B";

elseif ($score>=55): echo "Grade C";

elseif ($score>=40): echo "Grade D";

else: echo "Grade E";

endif;

Switch statement:

$score=78;

switch(true) {

  case $score>=85: echo "Grade A"; break;

  case $score>=70: echo "Grade B"; break;

  case $score>=55: echo "Grade C"; break;

  case $score>=40: echo "Grade D"; break;

  default: echo "Grade E";

}

Both code produces same result, that is "Grade B".