Aggregate functions help turn large datasets into simple summaries used across many fields. GROUP BY and HAVING allow structured grouping and filtering of data for clearer reports. Functions like ...

select count(distinct city) from personal; // distinct :- is remove the duplicate value and showing the single value for example we have a 3 value with same name so ...

I am using Spring Boot 3.2.4 with Spring Data JPA. I have the following JpaRepository with a native query against PostgreSQL 15: @Repository public interface RevenueRepository extends ...

I realized how much easier my life would be if SQL had a mode() aggregate function. (I'm using it in the mathematical sense). I'm guessing that either I use SQL in a wierd way or there is a good ...