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SQL Advanced Querying DURATION: 2 Days

Course Overview

SQL Advanced Querying DURATION: 2 days INTRODUCTION This 2-day course is intended for students who have taken the “SQL Introduction to Querying” course or possess equivalent knowledge gained in the workplace or elsewhere. It may also prove beneficial to delegates wanting to refresh their current knowledge of the subject matter. Take your querying skills to a new level with this advanced course and gain a deeper understanding of your data. You will learn how to manipulate data in new and meaningful ways for the purposes of data analysis and reporting. Additionally, we will consider best practices for writing efficient queries and avoiding common pitfalls.

 

 

 

INTRODUCTION

This 2-day course is intended for students who have taken the “SQL Introduction to Querying” course or possess equivalent knowledge gained in the workplace or elsewhere. It may also prove beneficial to delegates wanting to refresh their current knowledge of the subject matter.

Take your querying skills to a new level with this advanced course and gain a deeper understanding of your data. You will learn how to manipulate data in new and meaningful ways for the purposes of data analysis and reporting. Additionally, we will consider best practices for writing efficient queries and avoiding common pitfalls.

You will find that this is a comprehensive course for this level, with plenty of illustrated examples and augmented with practical hands-on exercises.

Course content may vary to keep the training as relevant and up to date as possible.

PREREQUISITES

Delegates should understand the fundamental design of relational databases including, but not restricted to, the purpose of primary and foreign keys, entity relationships, and data normalization. These prerequisites can be met by taking the 2 day “SQL Relational Database Design and Querying Fundamentals” course.

Additionally, delegates should have attended the 2 day “SQL Introduction to Querying” course or possess equivalent knowledge gained in the workplace or elsewhere.

The training is delivered on a Microsoft SQL Server platform.

COURSE OBJECTIVES

Upon successful completion of this course, students will be able to:

  • Use Functions Native to SQL Server
  • Manipulate NULL Values in Queries
  • Conditionally Manipulate Data using the CASE Expression
  • Understand Native SQL Server Data Types
  • Implement Variables
  • Implement Advanced Join Techniques
  • Aggregate Data to Higher Grouping Levels
  • Rank Data Using SQL Server Ranking Functions
  • Analyse Data with Window Functions
  • Restrict Data Result Sets
  • Correlate Data with the APPLY Operator
  • Implement Temporary Data Storage
  • Transform Data Using Pivot Operators
  • Understand Common Table Expressions (CTE’s)
  • Implement Advanced Data Modification Techniques
  • Work with Native SQL Server Date and Time Data

COURSE OUTLINE

1. Using Functions in Queries

Introducing Native SQL Server Functions

Getting Help on Functions

Functions Relating to NULL Values

Using the CASE Expression

2. Working with SQL Server Data Types

Native SQL Server Data Types

Data Type Precedence

Implicit Data Type Conversions

Explicit Data Type Conversion Functions

Working with Variables

Using Batches

3. Advanced Table Join Techniques

Reviewing Joins

Joining a Table to Itself (Self Join)

Using Non-Equi Joins

4. Aggregating Data at Higher Levels

Reviewing SQL Server Aggregate Functions

Using the ROLLUP and CUBE Operators

Using GROUPING SETS

5. Ranking Grouped Data

Window Functions that Rank Data

Using ROW_NUMBER

Using RANK

Using DENSE_RANK

Using NTILE

6. Analysing Data with Window Functions

Aggregate Window Functions

Analytic Window Functions

7. Restricting Result Sets

Reviewing the UNION and TOP Operators

Using the EXCEPT and INTERSECT Operators

Using UNION, EXCEPT, and INTERSECT Together

Using OFFSET/FETCH NEXT Filters

8. Advanced Subqueries

Reviewing Subqueries

Using the APPLY Operator

9. Temporary Storage

Table Variables

Temporary Tables

10. Crosstab Queries

Using the PIVOT Operator

Using the UNPIVOT Operator

11. Common Table Expressions

Introduction to Common Table Expressions

Using Common Table Expressions

Recursive Queries Using Common Table Expressions

12. Advanced Data Modification Techniques

Using the OUTPUT Clause

The MERGE Statement

13. SQL Server Date and Time Data Types

Understanding SQL Server Date and Time Data Types

Querying and Modifying Date and Time Data

Native SQL Server Date and Time Functions

Guidelines and Techniques for Querying Dates