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Oracle® Database SQL Language Reference
12c Release 1 (12.1)

E17209-15
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TRUNC (number)

Syntax

trunc_number::=

Description of trunc_number.gif follows
Description of the illustration trunc_number.gif

Purpose

The TRUNC (number) function returns n1 truncated to n2 decimal places. If n2 is omitted, then n1 is truncated to 0 places. n2 can be negative to truncate (make zero) n2 digits left of the decimal point.

This function takes as an argument any numeric data type or any nonnumeric data type that can be implicitly converted to a numeric data type. If you omit n2, then the function returns the same data type as the numeric data type of the argument. If you include n2, then the function returns NUMBER.

See Also:

Table 2-10, "Implicit Type Conversion Matrix" for more information on implicit conversion

Examples

The following examples truncate numbers:

SELECT TRUNC(15.79,1) "Truncate" FROM DUAL;

  Truncate
----------
      15.7

SELECT TRUNC(15.79,-1) "Truncate" FROM DUAL;

  Truncate
----------
        10