day function
Applies to:  Databricks SQL 
 Databricks Runtime
Returns the day of month of the date or timestamp. This function is a synonym for extract(DAY FROM expr).
note
When extracting fields from a TIMESTAMP (TIMESTAMP_LTZ), the result is based on the session timezone.
Syntax
day(expr)
Arguments
- expr: A- DATE,- TIMESTAMP, or- TIMESTAMP_NTZexpression.
Returns
An INTEGER.
Examples
SQL
> SELECT day('2009-07-30');
 30