Truncate dates or times in Snowflake with DATE_TRUNC

The `DATE_TRUNC` function in Snowflake is used to round down dates and timestamps, allowing users to format their time-related data as needed. This function helps eliminate fine-grain details by truncating a date, time, or timestamp to a specified part such as day, month, or year. The syntax for using `DATE_TRUNC` is simple: `DATE_TRUNC(part, date_or_time_expression)`. Common reasons to use `DATE_TRUNC` include aggregating data by a certain timeframe, comparing data against specific time periods, and standardizing timestamps. Other similar functions in Snowflake are `DATE_PART`, which extracts a specific part of a date or time, and `TIMESTAMPADD`, which adds or subtracts time units from a timestamp.