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Overview

SQL is an industry-standard language for accessing mainframe, midrange and LAN-based, multi-user relational databases. This course will teach the delegate how to read and write good SQL for querying, updating and maintaining SQL databases. The course progresses through the elements of the language to build a thorough appreciation and understanding of SQL's capabilities and power. It covers ANSI-standard SQL and some of the common extensions.

This course is made up of a mix of theory and practical sessions. You will complete a series of exercises that cover all the important components of the language and allow you to practise your SQL.

Please Note: The course will use a Microsoft SQL Server platform and T-SQL in all labs and practices to illustrate the use of the SQL language

Target

Audience

This course is suitable for anyone wishing to use SQL to access data. This course is a common prerequisite for those going on our client/server or database courses.

Skills Gained

At the end of this course you will be able to:

describe where the SQL language came from and its set-based mode of operation
write SQL statements to create and manipulate database objects and data
read SQL effectively
write queries to join many related tables
use the features of the language to safeguard the data and its value to the user
recognise the dangers inherent in the language that may return the right result but would be fatally flawed with different data

Prerequisites

A level of computer literacy is needed.
Typically delegate skills will include a working familiarity with the Windows graphical environment but no prior knowledge of SQL.
The most successful students on this course are those who can type accurately and consistently, and can cope with 'syntax' as SQL is a syntactically 'fussy' language.
Typically delegates will have coded in some other language but it is not necessary to have done so to be successful on this course as the range of exercises allow students to work at the most appropriate pace for them.

Outline

Introduction to Relational Databases

The need for an SQL standard
The ANSI standards
What is a database?
What is a relational database?
Components of a relational database
Normalised data
Anatomy of a table
Primary and foreign keys
Joins
Components of SQL

Data Manipulation Language

SELECT operations
DISTINCT
Virtual columns
Column aliases
Functions
Restricting the rows returned
Multiple conditions
Ordering data
Inserting rows
Updating rows
Deleting rows

Joining tables

The theory of joining tables
Cross, Inner, Outer, Full, Left and Right
Composite joins
Table aliases

Data Definition Language

Data types
Column attributes
Create table
Referential integrity
Alter and drop tables

Views

Defining simple views
Views with virtual columns
Restricted-column views
Joined-table views
Restricted-row views
View restrictions

Summarised Queries

Table aggregates
GROUP BY and aggregates
The HAVING clause

Subqueries

Using simple Subqueries
EXISTS
Correlated Subqueries

Set operations

Union
Intersect
Except/Minus

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Thinking about Onsite?

If you need training for 3 or more people, you should ask us about onsite training. Putting aside the obvious location benefit, content can be customised to better meet your business objectives and more can be covered than in a public classroom. Its a cost effective option. One on one training can be delivered too, at reasonable rates.

Submit an enquiry from any page on this site and let us know you are interested in the requirements box, or simply mention it when we contact you.

All $ prices are in USD unless it’s a NZ or AU date

SPVC = Self Paced Virtual Class

LVC = Live Virtual Class

SQL Language

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Target

Course Dates

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