(DATE_PART('Hour', end_date start_date)) * 60 + Here is the basic syntax: (DATE_PART('Day', end_date - start_date)) * 24 + Find the “date_diff” in minutes and add it with the “date_diff” in hours and the “date_ diff” in days. Find the “date_diff” in hours and multiply it by “60”. First, find the “date_diff” in days and multiply it with “24”. To find the date difference in minutes from the given DateTime values, use the following steps: The output shows that the difference between the given TIMESTAMPS is “25” hours. Let’s learn how to find the date difference in hours using the “DATE_PART()” function: SELECTĭATE_PART('Day', ' 04:10:00'::TIMESTAMP - ' 03:15:00'::TIMESTAMP) * 24 (DATE_PART('Hour', end_date) - DATE_PART('Hour', start_date)) Įxample: Calculating Date Difference in Hours The below syntax will help you understand this concept better: (DATE_PART('Day', end_date - start_date)) * 24 + Calculate the “date_diff” in hours and add it with the “date_diff in days”. To find the date difference in hours from the given DateTime values, you must follow the below-provided steps: The output demonstrates that the difference between the input dates is “3” weeks. TRUNC(DATE_PART('Day', ''::TIMESTAMP - ''::TIMESTAMP)/7) AS week_diff In the below code snippet, the DATE_PART() function is used along with the TRUNC() function to get the date difference in weeks: SELECT Here, the TRUNC() function is used to trim the floating points from the weeks' difference.Įxample: Calculating Date Difference in Weeks The output snippet demonstrates that the date difference is “22” days.ĭivide the “date difference in days by 7” and wrap it within TRUNC() function to find the date difference in weeks, as shown below: TRUNC(DATE_PART('Day', end_date - start_date)/7) In the following snippet, the DATE_PART() function is used to find the date difference in “Days”: SELECTĭATE_PART('Day', ''::TIMESTAMP - ''::TIMESTAMP) AS day_diff To get the date difference in days, use the following syntax: DATE_PART('Day', end_date - start_date) Įxample: Calculating Date Difference in Days The output successfully retrieves the date difference in months. The below snippet demonstrates how to find the date difference in “Month” using the DATE_PART() function: SELECTĭATE_PART('Month', '' :: DATE)) AS month_diff Multiply the “date difference in years” with “12” and add it to the “date difference in months” to find the precise date difference in months.Įxample: Calculating the Date Difference in Months With DATE_PART() function, you can calculate the DateTime difference in "Month" as follows: (datediff_in_years) *12 + (DATE_PART('Month', end_date) - DATE_PART('Month', start_date)) įrom the above syntax, you can notice that to find the date difference in months, first, you need to find the date difference in years. The output successfully retrieves the date difference in years. The DATE_PART() is utilized in the following code snippet to calculate the difference between the given dates in “years”: SELECTĭATE_PART('YEAR', '' :: DATE) AS year_diff Where the “start_date” and “end_date” can be “Timestamps”, “Dates”, “Intervals”, etc.Įxample: Calculating the Date Difference in Years To find the DateTime difference in “Years” using DATE_PART() function, use the below syntax: DATE_PART('YEAR', end_date) - DATE_PART('YEAR', start_date) Year - Month - Week - Day - Hour - Minute - Second This section demonstrates how to use the DATE_PART() function to find date differences in: So, it can be used with the “-” operator to find the difference between the given DateTime values. The DATE_PART() function is used in Postgres to get a specific field from a date. How to Find DateTime Difference in Postgres Via the DATE_PART() Function? This post presents a comprehensive guide on calculating the difference between different dates, times, timestamps, and intervals using examples. Well! In PostgreSQL, the “-” operator, DATE_PART(), EXTRACT(), and AGE() functions are used to calculate the difference between various DateTime values. So, how to find the DateTime difference in Postgres? However, Postgres doesn’t support the DATEDIFF function. Database management systems, such as SQL Server, Oracle, etc., utilize the DATEDIFF function to find the difference between given Dates.
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