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Writing Advanced SQL Queries Blended Learning


This Premium course offers both classroom training and video learning to enhance your learning experience. Please see below for full details.

SQL is the cornerstone of all relational database operations. In this hands-on course, you learn to exploit the full potential of the SELECT statement to write robust queries using the best query method for your application, test your queries, and avoid common errors and pitfalls. It also teaches alternative solutions to given problems, enabling you to choose the most efficient solution in each situation. 

The SQL Language is an ANSI/ISO standard language used by all relational database products. This course describes the standard language, but also identifies deviations from the standard in two widely-used database products, Oracle and Microsoft SQL Server. For the hands-on exercises, the course environment allows the students to choose between working with the PostgreSQL database product or Microsoft SQL Server.

Who Should Attend:

  • Those who are developing applications using relational databases, or who are using SQL to extract and analyse data from databases and need to use the full power of SQL queries.

What's Included

Included - Unlimited annual access to:

  • Library of on-demand courses
  • 1-day instructor-led training course
  • 3-day instructor-led training course
  • Pre-configured practise labs
  • Practise exams, flashcards, and performance tracker
  • One-on-one after-course instructor coaching
  • End-of-course exam included
  • After-course computing sandbox included

This product offers access to a library of Microsoft on-demand courses including SQL, Windows, Exchange, and more. At any time during yourannual access to this offering, you may attend one of our 1-day review sessions focused specifically on Powerful SQL Queries for SQL Server.

More Information

Recommended Experience:

  • This is an advanced course and knowledge of the basics of SQL at the level of Introduction to SQL Programming Training or equivalent is assumed.

You Will Learn How To:

  • Maximise the potential of SQL to build powerful, complex and robust SQL queries
  • Query multiple tables with inner joins, outer joins and self joins
  • Construct recursive common table expressions
  • Summarise data using aggregation and grouping
  • Execute analytic functions to calculate ranks
  • Build simple and correlated subqueries
  • Thoroughly test SQL queries to avoid common errors
  • Select the most efficient solution to complex SQL problems

Course Outline

Introduction and Overview

SQL fundamentals

  • Why SQL can be both easy and difficult 
  • Recommendations for thorough testing

Retrieving data with SELECT

  • Expressions
  • Literals
  • Handling NULLs properly

Executing queries

  • Analysing query plans 
  • Enhancing query performance 
  • Retrieving partly results with FETCH and OFFSET
  • Selecting the best alternatives 
  • Avoiding errors and pitfalls

Querying Multiple Tables

Implementing various types of joins

  • Inner joins 
  • Cross joins 
  • Left, right and full outer joins 
  • Equijoins vs. theta joins 
  • The performance implications of joins 
  • Adding filter conditions to outer joins

Writing self joins

  • Joining a table to itself 
  • Chaining self joins 
  • Solving time-interval problems

Combining queries with set operators

  • UNION 

Aggregate Functions

Summarising data with aggregate functions

  • COUNT 
  • SUM 
  • AVG 
  • MIN 
  • MAX 
  • Managing NULLs 
  • identifying duplicates

Grouping data

  • Applying conditions with HAVING 
  • Calculating moving averages
  • Building crosstab reports

Extending group queries

  • Nesting grouped aggregates 
  • Joins and grouping 
  • Introducing subtotals with CUBE and ROLLUP

Performing Extensive Analysis with Analytic Functions

The OVER clause

  • Specifying the ordering before applying the function
  • Splitting the result set into logical partitions

Calculating ranks

  • ROW_NUMBER with ordered sets 
  • Calculating percentiles

Extending the use of aggregates

  • Partitioning in multiple levels 
  • Computing running totals 
  • Comparing row and aggregate values
  • Top-N queries
  • Defining sliding window boundaries

Building Subqueries

Self-contained subqueries

  • Subqueries in conditions and column expressions 
  • Creating multilevel subqueries 
  • Avoiding problems when subqueries return NULLs 
  • Handling multirow subquery results
  • Finding gaps in number series

Correlated subqueries

  • Accessing values from the outer query 
  • EXISTS vs. IN 
  • Identifying duplicates 
  • Avoiding accidental correlation

Common table expressions

  • Reusable subqueries 
  • Recursive subqueries 
  • Traversing hierarchies

Breaking Down Complex Queries

  • Overcoming SQL limitations 
  • Reducing complexity and improving performance

On-Demand Course List

  • MTA - Windows Operating System Fundamentals (Exam 98-349)
  • MTA - Network Fundamentals (Exam 98-366)
  • MTA - Windows Server Fundamentals (Exam 98-365)
  • MTA - Security Fundamentals (Exam 98-367)
  • MTA - Cloud Fundamentals (Exam 98-369)
  • MCSA Windows 7 - Windows 7, Configuring (Exam 70-680)
  • MCSA Windows 10 - Configuring Windows Devices (Exam 70-697)
  • MCSA Windows 10 - Installing and Configuring Windows 10 (Exam 70-698)
  • MCSA Windows Server 2012 - Installing and Configuring (Exam 70-410)
  • MCSA Windows Server 2012 - Administering (Exam 70-411)
  • MCSA Windows Server 2012 - Configuring Advanced Services (Exam 70-412)
  • MCSE Windows Server 2012 - Designing and Implementing a Server Infrastructure (Exam 70-413)
  • MCSE Windows Server 2012 - Implementing an Advanced Server Infrastructure (Exam 70-414)
  • Microsoft SQL Server 2012 - Administering Microsoft SQL Server 2012 Databases (Exam 70-462)
  • Microsoft SQL Server 2014 - Querying Microsoft SQL Server 2014 (Exam 70-461)
  • Microsoft SQL Server 2016 - Querying Data with Transact-SQL (Exam 70-461)
  • MCSA Windows Server 2016 -- Installation, Storage, and Compute (Exam 70-740)
  • MCSA Windows Server 2016 - Networking (Exam 70-741)
  • MCSA Windows Server 2016 - Identity (Exam 70-742)
  • MCSE Windows Serve 2016 - Securing Windows Server 2016 (Exam 70-744)
  • Microsoft Exchange 2013 (Exam 74-341)
  • Microsoft Exchange Server 2016 (Exam 74-345)
  • Microsoft Project 2013 (Exam 74-343)
  • Microsoft Office 365 (Exam 70-346)
  • Microsoft Office 365 (Exam 70-347)
  • System Centre 2012 Configuration Manager (Exam 74-243)
  • Data Centre Managing with SCOM
  • MCSE Private Cloud - 70-246
  • vMCSE Private Cloud - 70-247
  • SharePoint - Core Technologies of Microsoft SharePoint 2016 (Exam70-339)
  • Advanced SharePoint - Advanced Technologies (Exam 70-339)
  • Implementing Microsoft Azure Infrastructure (Exam 70-533)
  • Architecting Microsoft Azure Solutions (Exam 70-535)

Advanced SQLFAQs

What background do I need?

This is an advanced course and knowledge of the basics of SQL at the level of Introduction to SQL Programming Training or equivalent is assumed.

Is the on-demand content the same as the 3-dayinstructor class?

No. While many of the same points are covered, taking the instructor-led Writing Advanced SQL Queries course provides the deepest dive into that area. This offering is intended for those who wish to gain a broad knowledge of the topics described in the course outline above - including SQL.

What on-demand content will I receive?

An outline of the content you will receive can be seen above. You will also get access to any new on-demand content that becomes available during yourannual enrolment period.

How many labs will I receive?

You will get access 19 pre-configured lab bundles spanning the Microsoft curriculum.

How many practise exams will I have access to?

17 practise exams spanning the Microsoft curriculum are included.

How will I access my course materials if I choose this method?

Once payment is received, you will receive an email from us with all the links and information you need to get started.

How can I sign up for a review session?

Once you are enrolled in the program, specific details and dates will be sent to you.

One Day Instructor-Led Review

You'll be able to register for a Training Review Session at any time after you've placed your order.

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