How to use hive datediff function

Hive's DATEDIFF function is used to calculate the difference in days between two dates. Its syntax is DATEDIFF(date1, date2), where date1 and date2 are valid date types. Usage methods include: making sure the date format is valid, passing the date as a parameter to the function, and getting the date difference in days.

Hive DATEDIFF Function Usage Guide

Hive’s DATEDIFF function is used to calculate the difference in days between two dates . The syntax is as follows:

<code>DATEDIFF(date1, date2)</code>

where:

• date1 and date2 are valid date types, which can be strings, date objects or timestamp.

Usage:

The steps to use the DATEDIFF function are as follows:

1. Make sure date1 and date2 is a valid date format.
2. Pass date1 and date2 as parameters to the DATEDIFF function. The
3. function will return the date difference between date1 and date2, in integer days.

Example:

Calculate the date difference between 2023-03-08 and 2023-03-15:

<code>hive> SELECT DATEDIFF('2023-03-08', '2023-03-15');
7</code>

Calculate 2023 Date difference between -06-01 and 2023-07-01:

<code>hive> SELECT DATEDIFF('2023-06-01', '2023-07-01');
30</code>

Note:

• DATEDIFF function only calculates the difference in days, not Hours, minutes or seconds.
• If date1 or date2 is invalid or cannot be parsed, the function returns null.
• If date1 is later than date2, the function will return a negative value.

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