SQL Round Function

Question

round(45.923,-1) gives a result of 50. Why is this? How it is calculated?

(sorry guys i was mistaken with earlier version of this question suggestin

Answer 1

one thing is in the round function first parameter is the number and the second parameter is the precision index from the decimal side.

That means if precision index is 0 it is at the first decimal, -1 means before the decimal first number, 1 means right side of the first decimal i.e second decimal

For example

round(111.21,0)---------> return 111
round(115.21,-1)--------->return 120
round(111.325,2)---------->return 111.33
round(111.634,1)-----------> return 111.6