Handling Null Values in SQL Databases
Handling Null Values in SQL Databases In SQL databases, it is important to properly handle null values, which are empty or missing data. Here are some tips on how to handle null values effectively. When creating a table, you can define constraints to prevent null values. For example, let’s say we have a table called “people” with columns for age and name: CREATE TABLE people ( age INT NOT NULL, name CHAR(20) NOT NULL ); By adding the NOT NULL constraint to the column definitions, we ensure that both age and name cannot be null....