SIGN(x) gets the sign of x. SIGN() returns -1 if x is negative, 1 if x is positive, or 0 if x is zero. : SIGN « Numerical Math Functions « Oracle PL/SQL Tutorial

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Oracle PL/SQL Tutorial » Numerical Math Functions » SIGN

14. 18. 1. SIGN(x) gets the sign of x. SIGN() returns -1 if x is negative, 1 if x is positive, or 0 if x is zero.

The following example displays the sign of -5, 5, and 0, respectively:


SQL>

SQL> SELECT SIGN(-5), SIGN(5), SIGN(0) FROM dual;



  SIGN(-5)    SIGN(5)    SIGN(0)

---------- ---------- ----------

        -1          1          0



SQL>

14. 18. SIGN
	14. 18. 1.	SIGN(x) gets the sign of x. SIGN() returns -1 if x is negative, 1 if x is positive, or 0 if x is zero.
	14. 18. 2.	Use SIGN function to deal with column data
	14. 18. 3.	SIGN(-5)
	14. 18. 4.	SIGN(5) (2)
	14. 18. 5.	SIGN(0)

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