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PostgreSQL COALESCE() Function With Examples

In PostgreSQL, the COALESCE() function handles the null values more efficiently. It accepts unlimited arguments and returns the first non-null argument.

PostgreSQL DATEADD() Equivalent- How to Add Interval to Datetime

PostgreSQL doesn’t provide a DATEADD function to add an interval to date time. However, you can achieve the same functionality using the “+” and “-” operators.

PostgreSQL Letter Case Functions With Practical Examples

PostgreSQL provides various functions, such as LOWER(), INITCAP(), or UPPER(), to alter a string to lowercase, proper case, and uppercase, respectively.

PostgreSQL CURRENT_TIMESTAMP Function With Examples

PostgreSQL offers multiple date/time functions, such as CURRENT_DATE, NOW(), EXTRACT(), CURRENT_TIMESTAMP, etc. If we talk about the CURRENT_TIMESTAMP function, it retrieves the current date, time, and timezone when a transaction starts.

This write-up will present a thorough overview of the Postgres CURRENT_TIMESTAMP function with examples. So, let’s begin.

How to Use CURRENT_TIMESTAMP Function in PostgreSQL?

Firstly, let’s understand the syntax of the CURRENT_TIMESTAMP function:


Here, “precision” is an optional …

How To Find and Delete Duplicate Rows in PostgreSQL

In PostgreSQL, we can use the "DELETE USING" statement, subquery, or Postgres immediate table to delete duplicate rows from a table.

PostgreSQL Aggregate Functions With Practical Examples

To perform calculations on a set of rows, the aggregate functions are used. These functions perform calculations on the table rows and return only a single row.

How to Use MIN() Function in PostgreSQL

In PostgreSQL, the MIN() function retrieves a set's minimum value. Use the LEAST() function to get the minimum/least value from more than one column

How to Use MAX() Function in PostgreSQL

PostgreSQL offers a built-in MAX() function that is used to retrieve the maximum value of a set. The MAX() function has multiple real-life implementations, such as fetching the highest-paid employee, finding a top-ranked student, and so on. So, let’s learn the working of the MAX() function through Practical examples.

How to Use MAX() Function in Postgres?

The below snippet will show you the basic syntax of the MAX() function:

MAX(exp); …

How to Use AVG() Function in PostgreSQL

In PostgreSQL, the AVG() function is used to retrieve the average of a set. The DISTINCT operator is used with the AVG() function to find the average of distinct values.

PostgreSQL SUM() Function With Practical Examples

The SUM() is used to perform the addition on a set of values. Use the DISTINCT option with the SUM() function to calculate the sum of distinct values.