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Oracle® Database SQL Reference
10g Release 1 (10.1)

Part Number B10759-01
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MOD


Syntax

mod::=
Description of mod.gif follows
Description of the illustration mod.gif


Purpose

MOD returns the remainder of m divided by n. Returns m if n is 0.

This function takes as arguments any numeric datatype or any nonnumeric datatype that can be implicitly converted to a numeric datatype. Oracle determines the argument with the highest numeric precedence, implicitly converts the remaining arguments to that datatype, and returns that datatype.


See Also:

Table 2-11, "Implicit Type Conversion Matrix" for more information on implicit conversion and "Numeric Precedence " for information on numeric precedence


Examples

The following example returns the remainder of 11 divided by 4:

SELECT MOD(11,4) "Modulus" FROM DUAL;

   Modulus
----------
         3

This function behaves differently from the classical mathematical modulus function when m is negative. The classical modulus can be expressed using the MOD function with this formula:

m - n * FLOOR(m/n)

The following table illustrates the difference between the MOD function and the classical modulus:

m n MOD(m,n) Classical Modulus
11 4 3 3
11 -4 3 -1
-11 4 -3 1
-11 -4 -3 -3


See Also:

FLOOR and REMAINDER , which is similar to MOD, but uses ROUND in its formula instead of FLOOR