Usage Notes - Analytics Database - Teradata Vantage

TRUNC functions as follows:

• It truncates places_value places to the right of the decimal point if places_value is positive.
• It truncates (makes 0) places_value places to the left of the decimal point if places_value is negative.
• It truncates to 0 places if places_value is zero or is omitted.
• If numeric_value or places_value is NULL, the function returns NULL.