Returns the rounded absolute value of a numeric value. The returned value will always be rounded to less than the original value.

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Syntax

TRUNC(<value>[, <decimal>])

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Parameters

ParameterDescriptionSupported input types
<value>Valid values include column names, functions that return a column with numeric values, and constant numeric values.DOUBLE PRECISION
<decimal>Optional. An INTEGER constant that defines the decimal range of the returned value. By default, TRUNC returns whole numbers.INTEGER

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Return Type

DOUBLE PRECISION

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Example

The following example returns the truncated value of -20.5: 
SELECT
    TRUNC(-20.5);
Returns -20 Example The following code example returns the truncated value of -99.999999 to 3 decimal places: 
SELECT
    TRUNC(-99.999999, 3);
Returns -99.999