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If you would like to learn how to retrieve information from a database, but don’t know what to begin with, then this book is intended for you. If you are familiar with SQL, or even are a database specialist, it still may be of interest for you to test your level of knowledge.

The goal of this book is to let you learn  SQL(Structured Query Language) is a database computer language designed for the retrieval and management of data in relational database management systems (RDBMS), database schema creation and modification, and database object access control management.SQL quickly. Here, «quickly» does not mean «superficially». On the contrary, while leaving aside many aspects of the language, the author tries to convey a thorough understanding of logical data structure, and consequently of constructing correct to give the idea of correct form of query taking into account structure. On top of that, we strongly believe, that reading of this book will contribute to understanding of the problems, which are outside the scope of this work.

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aggregate functions Airport ALL AND AS keyword ASCII AVG Battles Bezhaev Bismarck C.J.Date calculated columns Cartesian product CASE cast CHAR CHARINDEX Chebykin check constraint classes COALESCE common table expressions comparison predicates Computer firm CONSTRAINT CONVERT correlated subqueries COUNT CROSS APPLY CTE data type conversion data types database schema DATEADD DATEDIFF DATENAME DATEPART DATETIME date_time functions DDL DEFAULT DEFAULT VALUES DELETE DISTINCT DML duplicates edge equi-join EXCEPT exercise (-2) More tags
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