Introduction

This chapter will cover two broad areas of Teradata: one will be advanced SQL and the other will be backup and recovery.

Structured query language (SQL) is the relational database language used to store, retrieve, and manipulate data in databases. Teradata also uses SQL to work with datasets stored in the database.

Teradata SQL is basically divided into three parts:

• Data definition language (DDL): These likeCREATE and DROP
• Data manipulation language (DML): These are like SELECT, INSERT, and DELETE
• Data control language (DCL): These are like GRANT and REVOKE

Other than these basic SQL functions, Teradata Database has advanced SQL at its disposal. Advanced SQL helps users to execute complex cases and run more advanced data analytic functions.

Some of the advanced Teradata SQL features are:

• Windows aggregate function
• Ordered analytic function
• Extended time and date function
• Advanced ranking function
• Advanced sampling and random function
• Extended grouping function
• Merge into function
• Large binary...