In this article, we will learn how to use the Primary Key constraint in SQL. The PRIMARY KEY constraint is…
In this article, we will learn how to use the UNIQUE constraint in SQL. The UNIQUE constraint is used to…
In this article, we will learn how to use the NOT NULL constraint in SQL. A column can hold NULL…
In this article, we will learn how to use the ALTER TABLE statement in SQL. To add or delete or…
In this article, we will learn how to use the TRUNCATE TABLE statement in SQL. To delete the data inside…
In this article, we will learn how to delete/drop a Table using SQL query. To drop an existing table in…
In this article, we will learn how to create a Table using SQL query. To create a new table in…
In this article, we will learn how to use the DENSE_RANK() function with a SQL select query. The DENSE_RANK() is a…
In this article, we will learn how to use the RANK() function with a SQL select query. The RANK() is a…
In this article, we will learn how to use ROW_NUMBER() function with a SQL select query. The ROW_NUMBER() is a window…