Create a query for displaying e1.first_name with e1.last_name of employee under column alias “Employee Full Name” by using concatenation from employees table with a table alias e1 and e2.first_name with e2.last_name of employee under column alias “Manager Full Name” self joining with employees table with a table alias e2 on the basis of equality of manager_id from e1 with employee_id from e2. Use order by clause to display list according to first name of manager e2.first_name in ascending order.

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A: Given:

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A:

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Intermediate SQL Concepts

A query is a request for data or information from one or more database tables. This information could be presented in the form of pictorials, graphs, or complicated findings which helps in easy interpretation. Structured Query Language (SQL) is the most widely used programming language for retrieving and organizing data from relational databases. Collection of tables with rows and columns is referred to as a database. SQL is the language of databases. It makes it easier to extract specific data from databases, which can then be used for analysis.