Developing SQL Queries for Oracle Databases

Level: Advanced
Rating: 4.8/5 4.83/5 Based on 96 Reviews

This Oracle SQL Queries training course will help you increase productivity and maximise the potential of SQL to formulate intricate queries for Oracle databases. Learn to solve business problems easily, efficiently, and elegantly with only a few lines of SQL code, and gain the practical skills to choose the best query method — ensuring accuracy and avoiding common errors or pitfalls.

Key Features of this Oracle SQL Queries Training:

  • After-course instructor coaching benefit
  • Learning Tree end-of-course exam included

You Will Learn How To:

  • Maximise the potential of SQL to formulate complex queries
  • Thoroughly test SQL queries and avoid common errors
  • Select the most efficient solution to complex SQL problems
  • Leverage the analytical functions of Oracle
  • Employ inner joins, outer joins, cross joins, and self joins

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In Class & Live, Online Training

  • 4-day instructor-led training course
  • After-course instructor coaching benefit
  • Learning Tree end-of-course exam included
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Standard £2095




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In Class & Live, Online Training

Note: This course runs for 4 Days

  • 30 Nov - 3 Dec 2:00 PM - 9:30 PM GMT Online (AnyWare) Online (AnyWare) Reserve Your Seat

  • 1 - 4 Feb 2:00 PM - 9:30 PM GMT New York / Online (AnyWare) New York / Online (AnyWare) Reserve Your Seat

  • 31 May - 3 Jun 2:00 PM - 9:30 PM BST Ottawa / Online (AnyWare) Ottawa / Online (AnyWare) Reserve Your Seat

  • 2 - 5 Aug 2:00 PM - 9:30 PM BST New York / Online (AnyWare) New York / Online (AnyWare) Reserve Your Seat

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Oracle SQL Queries Course Information

  • Requirements

    SQL and Oracle RDBMS knowledge at the level of: Course 925, SQL Programming Language Introduction, or Course 2226, Oracle Database 12c Introduction
  • Software

    This course is currently running on Oracle 12c

Oracle SQL Queries Course Outline

  • Introduction and Overview

    The uses of SQL queries

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

    Enhancing query performance

    • Query optimisation
    • Choosing the most efficient query method
  • Leveraging SQL Functions to Build Queries

    Aggregate functions

    • Grouping in several levels
    • Grouping and NULLs
    • CUBE and ROLLUP
    • Building crosstab reports
    • Utilising the PIVOT operator in Oracle 11g

    Single-row functions

    • String-manipulation functions
    • Functions for date and time manipulation
    • Simulating IF ... THEN ... ELSE with functions
    • Handling regular expressions with Oracle 10g functions
  • Performing Extensive Analysis with Analytical Functions

    Calculating ranks

    • ROW_NUMBER depending on ORDER BY

    Extending the use of aggregates

    • Partitioning in multiple levels
    • Computing running totals
    • Comparing row and aggregate values
    • Defining sliding window boundaries
  • Developing Complex Joins

    Creating inner and outer joins

    • Building multiple table joins
    • Grouping and joins

    How and when to use self-joins

    • Implementing recursive self-joins with CONNECT BY
    • CONNECT BY and join simultaneously
    • Oracle 10g enhancements to CONNECT BY

    Applying the ANSI standard join syntax

    • Adding filter conditions to OUTER JOINS
    • Differences between new ANSI and old Oracle style

    Manipulating the set operators

    • MINUS
  • Building Subqueries

    Noncorrelated subqueries

    • Subqueries that return NULL
    • Multiple row subqueries
    • Multiple column subqueries

    Handling correlated subqueries

    • Fetching main query values
    • The EXISTS operator
    • Avoiding accidental correlation

    Subqueries in the FROM clause

    • Breaking up a complex problem into manageable pieces
    • Factoring subqueries for reusability
    • Applying recursive factored subqueries in Oracle 11g R2

    Subqueries as expressions

    • Subqueries as parameters to functions
    • Correlated and noncorrelated subqueries in expressions
  • Employing Views and Temporary Tables

    Overcoming obstacles with views

    • Multiple group levels in one query
    • How views impact performance

    Temporary tables as alternatives to views

    • Avoiding interference from other users
    • Tailoring temporary tables
  • Introducing Oracle 12c

    • Limiting the number of rows returned with FETCH
    • Retrieving partly results with OFFSET
    • Simulating joins with lateral views and APPLY
    • Declaring local functions in the WITH clause

Team Training

Oracle SQL Queries Training FAQs

  • What software does this Oracle SQL Queries course run on?

    This course is currently running on Oracle 12c.

  • Can I learn to create Oracle SQL queries online?

    Yes! We know your busy work schedule may prevent you from getting to one of our classrooms which is why we offer convenient online training to meet your needs wherever you want, including online training.

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