FORMAT (MySQL)

Quite handy at times:

• Figures are rounded off as how I expect
• Be aware that the output is a string, not a number:

select
   4.400000,
   format(4.400000, 2),
   4.5,
   format(4.5, 2),
   4.499,
   format(4.499, 2),
   4.4499,
   format(4.4499, 2)

Output:

4.400000
4.40
4.5
4.50
4.499
4.50
4.4499
4.45