TRUNC(x, [y]) gets the result of truncating the number x to an optional y decimal places. : TRUNC « Numerical Math Functions « Oracle PL/SQL Tutorial

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Oracle PL/SQL Tutorial » Numerical Math Functions » TRUNC

14. 26. 1. TRUNC(x, [y]) gets the result of truncating the number x to an optional y decimal places.

If y is omitted, x is truncated to zero decimal places.

If y is negative, x is truncated to the left of the decimal point.

The following example displays truncating 5.75 to zero, 1, and - 1 decimal places:


SQL> SELECT TRUNC(5.75), TRUNC(5.75, 1), TRUNC(5.75, -1) FROM dual;



TRUNC(5.75) TRUNC(5.75,1) TRUNC(5.75,-1)

----------- ------------- --------------

          5           5.7              0



SQL>

14. 26. TRUNC
	14. 26. 1.	TRUNC(x, [y]) gets the result of truncating the number x to an optional y decimal places.
	14. 26. 2.	TRUNC column value
	14. 26. 3.	TRUNC may have a second argument to handle precision: means the distance to the right of the decimal point
	14. 26. 4.	The second argument of TRUNC defaults to 0
	14. 26. 5.	The second argument of TRUNC, precision, may be negative, which means displacement to the left of the decimal point
	14. 26. 6.	TRUNC(5.75)
	14. 26. 7.	TRUNC(5.75, 1)
	14. 26. 8.	TRUNC(5.75, -1) (2)

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