SQL set operations combine the output of two or more SELECT statements into a single result set. The set operators…
What is an Alias? An SQL alias is simply an alternative name that can be used to refer to a…
In the previous section we saw Aggregate Functions, in this section let us discuss Scalar Functions. Scalar Function: A scalar…
What are SQL Functions? SQL functions are predefined routines that can be invoked by SQL queries to perform specific operations…
What is the SQL DISTINCT keyword? The SQL DISTINCT keyword is used in conjunction with the SELECT statement to remove…
The HAVING clause in SQL Server includes one or more conditions that must be TRUE for groups of records. It's…
The SQL Group By statement is used to organize similar data into groups. The data is further organized using an…
What is the ORDER BY Clause? In the SELECT query, the ORDER BY clause can be used to sort the…
In SQL to filter data based on a specific pattern, the LIKE clause is used in the WHERE condition. It…