[Function] returns the absolute value of x
Parameters x, numeric expressions
[Back] Digital
[Example]
select abs(100),abs(-100) from dual;
sign(x)
[Function] returns x plus-minus
Parameters x, numeric expressions
[Return] number, if the return value is 1, -1, 0, a negative return 0
[Example]
select sign(100),sign(-100),sign(0) from dual;