Interview SQL Queries

Query 1: Select 8 from [dbo].[Customers]

Output :

Query 2: Select * from [dbo].[Customers] Where 1=2

Output:

Why a table can have only one clustered index?

A clustered index sorts and stores the data rows in the table based on the index key values. Therefore only one clustered index can be created on each table because the data rows themselves can only be sorted in one order.