If you have a table with duplicate rows in PostgreSQL, you can use any of the following queries to return the duplicate rows.
window functions
3 Ways to List All Functions in PostgreSQL
Here are three options for listing out all functions in a PostgreSQL database.
SUM() Function in SQL Server
In SQL Server, the SUM() aggregate function returns the sum of a given expression.
It can also be used to return the sum of all distinct (unique) values in the expression.
SUM() only works on numeric columns. Null values are ignored.
3 Ways to List all Stored Procedures in a PostgreSQL Database
Here are three options for listing out all the stored procedures in a Postgres database.
SUM() Function in MySQL
In MySQL, the SUM() aggregate function returns the sum of a given expression.
It can also be used to return the sum of all distinct (unique) values in an expression.
AVG() Function in MariaDB
In MariaDB, the AVG() function returns the average value of the given expression.
The DISTINCT option can be used to return the average of the distinct values (i.e. remove duplicates before calculating the average).
NULL values are ignored.
SUM() Function in MariaDB
In MariaDB, the SUM() aggregate function returns the sum of a given expression.
It can also be used to return the sum of all distinct (unique) values in an expression.
MIN() Function in MariaDB
In MariaDB, MIN() is an aggregate function that returns the minimum value in a given expression.
MAX() Function in MariaDB
In MariaDB, MAX() is an aggregate function that returns the maximum value in a given expression.