In this article, we will learn how to use the NULL Functions in SQL. The following are the commonly used…
In this article, we will learn how to use the Aggregate Functions in SQL. An Aggregate Function allows us to…
In this article, we will learn how to get the second highest salary in SQL.
In this article, we will learn how to use the String Functions in SQL. SQL Server has many built-in String…
In this article, we will learn how to create a View using SQL query. The CREATE VIEW statement is used…
In this article, we will learn how to create an auto-increment field/column using a query in SQL. The IDENTITY keyword…
In this article, we will learn how to create and delete Indexes in SQL. To create indexes in tables, the…
In this article, we will learn how to add a column with default value using the DEFAULT constraint in SQL. To…
In this article, we will learn how to use the CHECK constraint in SQL. To limit the value range that…
In this article, we will learn how to use the Foreign Key constraint in SQL. A FOREIGN KEY is a…