Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML and more.

NVL lets you replace null (returned as a blank) with a string in the results of a query. If expr1 is null, then NVL returns expr2. If expr1 is not null, then NVL returns expr1. The arguments expr1 …

This tutorial shows you how to use the Oracle NVL () function to substitute null with a more meaningful alternative.

Feb 26, 2025 · SQL’s NVL function replaces NULL values to optimize your dataset. In this tutorial we explain how the function works and show you examples.

Oct 28, 2023 · When diving into the realm of SQL, the NVL function stands out as a versatile tool to handle NULL values. This section will provide you with hands-on, practical examples …

May 3, 2025 · The NVL function in SQL replaces NULL values with a default. Learn how to use it, understand the syntax, and see how it compares to COALESCE for SQL queries.

Aug 8, 2024 · SQL general functions are built-in functions provided by SQL databases to perform various operations on data. These functions are categorized into several types based on their …

This Oracle tutorial explains how to use the Oracle / PLSQL NVL function with syntax and examples. The Oracle / PLSQL NVL function lets you substitute a value when a null value is …

Dec 26, 2023 · In summary, NVL is a simple way to substitute a default value for nulls in Oracle Database. It avoids errors when handling null values in calculations and expressions.

Jun 8, 2022 · With this syntax, we can provide any number of arguments, and NVL() will return the first non-NULL value. This syntax makes NVL() a synonym for COALESCE() (which …