MySQL round half

Question

Is it possible, in MySQL, to round half a specific way like PHP would do?

• PHP_ROUND_HALF_UP
• PHP_ROUND_HALF_DOWN
• P

Answer 1

Rounding on half specifically can be done using the ROUND function in just a single line:

SELECT ROUND(ROUND({your_input_value}*2,0)/2,1);

• The first ROUND({your_input_value}*2,0) gives you a rounded value as a whole integer.
• The second ROUND(.../2,1) gives you a single digit result instead of a bit longer result with more zeros and possible floating point deviations.

Similar other rounds with round up, down, or other multipliers like 3,4, etc can be created.