SIGN(a)
SIGN(a) is an arithmetic function, which provides information about the sign of an expression a ( a is a number).
|
a |
Result of the SIGN(a) Function |
|---|---|
|
a<0 |
-1 |
|
a=0 |
0 |
|
a>0 |
1 |
|
a is a NULL value |
NULL value |
|
a is a special NULL value |
Special NULL Value |