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Advanced SQL Server Database Querying

This course is aimed at SQL Server database developers, administrators and analysts who need to take the basics of SQL Server SQL Data Manipulation Language (DML) statements to the next level. The aim of the course is to show the more advanced use of SELECT, UPDATE and DELETE statements providing delegates with the necessary knowledge and hands on experience to construct complex queries to satisfy complex information extraction requirements.

Covers SQL Server 2005, SQL Server 2008, SQL Server 2012 and SQL Server 2014.

Learning Objectives

The course focuses on real world business needs and shows how to make the extensive SQL Server library of functions work together to manipulate and extract data values. It also explores the many different ways of retrieving information from multiple tables from simple multi-table SELECT statements through to complex correlated sub-queries as well as introducing the many ways of analysing and processing data through methods such as grouping of data and implementing computed columns. The course will do more than just teach each topic as an isolated subject; it will show delegates how to integrate all these query methods and more to help satisfy their business information extraction needs.

Pre-Requisites

Delegates should have SQL Server SQL language experience to the level of the PTR Querying SQL Server Databases.

Course Content

Review of SELECT Statement Basics

Nesting Functions

CASE Statement

Multiple Table SELECTs

  • CROSS Joins
  • INNER Join
  • OUTER Joins
  • FULL OUTER Join
  • Table Aliases
  • Self Join
  • Joining on non-key columns
  • Advanced Joins
  • Mixing INNER and OUTER Joins

Temporary Tables

  • Local Temporary Tables
  • Global Temporary Tables

Views

  • Single Table Views
  • Multi-table Views
  • Updating Through Views

Advanced Data Organisation

  • The GROUP BY Clause
  • The HAVING Clause
  • Ranking Grouped Data
  • ROW_NUMBER
  • RANK & DENSE_RANK
  • NTILE
  • The CUBE and ROLLUP options
  • GROUPING SETS
  • PIVOT

Sub Queries

  • Simple Sub Queries
  • Using Aggregate Functions in Sub queries
  • Correlated Sub-Queries
  • Avoiding Sub queries
  • Derived Table Sub-Queries
  • Sub Queries in SELECT Lists

Advanced Update & Delete Statements

  • Simple Update & Delete Statements
  • UPDATES and DELETES With Sub queries
  • The FROM Clause

Merging Records

  • MERGE Statement

Common Table Expressions (CTEs)

  • Simple CTEs
  • Recursive Data Sets
  • Hierarchical Data Sets

Simple Execution Plans

  • Graphical Execution Plans
  • Estimated Plans
  • Actual Plans
  • Query Plan Costs
  • Physical Operations
  • Order Of Execution

Exams & Certification

This course, along with the Creating Databases in SQL Server and SQL Server Database Querying Courses, helps to prepare delegates for the Microsoft 70-461 exam: Querying Microsoft SQL Server 2012. This exam credits towards MCSA and MCSE certifications. It should be noted, however, that all course attendances should be complemented by reference to the skills measured by the exam, a period of self-study and test exams before sitting the actual exam.

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