... decimalportion is quite significant, as in:mysql> SELECT CEIL(72.000000001), FLOOR(72 .99 999 999 9);+ + +| CEIL(72.000000001) | FLOOR(72 .99 999 999 9) |+ + +| 73 | 72 |+ + +1 row in set (0.00 ... places:mysql> SELECT ROUND(72. 090 9, 1), ROUND(72. 090 9, 2), ROUND(72. 090 9, 3);+ + + +| ROUND(72. 090 9, 1) | ROUND(72. 090 9, 2) | ROUND(72. 090 9, 3) |+ + + +| 72.1 | 72. 09 | 72. 091 |+ + + ... number72. 090 9 would be truncated to one, two, and three decimal places:mysql> SELECT TRUNCATE(72. 090 9, 1), TRUNCATE(72. 090 9, 2), -> TRUNCATE(72. 090 9, 3);+ + + +| TRUNCATE(72. 090 9, 1) |...