![]() So, the question is: ¿any way to subtract dates in PostgreSQL using Hibernate? Perhaps. I think (because now i'm a bit noob in Hibernate using) can help me in this situation (due the attribute "duration" is like transient - not represented in the database), but I don't know the way to build the appropiated query. The datediff Function plays an important role in the database management system because datediff functions as a calendar and is very helpful to users. The datediff means we can return the difference between two dates based on their specified interval. This function takes two arguments: the first is the end date and the second is the start date. PostgreSQL provides a datediff function to users. Here was the query i tried: select t1." group&q. PostgreSQL - DATEDIFF - Datetime Difference in Seconds, Days, Months, Weeks etc. Use the PostgreSQL AGE() function to retrieve the interval between two timestamps or dates. I have tried to use datediff function, but it did not work. Those attributes are Calendar and are mapped as Date in the DB, but I need to calculate the days (or weeks) between them.ĭue to this, I try to use the above, because using PostgreSQL we can subtract dates, but this doesn't work finally retrieved null to the entity's attribute. I need to estimate number of days between 2 different dates from different table. ![]() ![]() ![]() Hi! My problem refers to use a "derivate field" in my entity from two other attributes (in the database). Stay0_.stay_end_date - stay0_.stay_start_date as formula0_ But in most cases, what you really want is the number of days from the first date to the second date inclusively. (stay_cntr, stay_city, stay_country, stay_end_date, stay_start_date, stay_subj, stay_univ) Solution: The result is: Discussion: To count the difference between dates as days in PostgreSQL or Oracle, you simply need to subtract one date from the other, e.g. ![]()
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