Calculate time difference in SQL / Teradata

2019-07-16 sql teradata

This code snippet shows how to calculate time differences.

DATEDIFF function is not implemented in Teradata. Thus we need to use other approach to calculate time difference.

Code snippet

-- for calculate days difference, we can directly use minus (-) operator
SELECT DATE'2019-07-16' - DATE'2019-06-01' AS Diff_Days;

-- month different
SELECT (DATE'2019-07-16' - DATE'2019-06-01') MONTH(4) AS Diff_Months;