Oracle, a leader in database technology, is offering a Free SQL Advanced Course that not only enhances your SQL skills but also provides a certificate upon completion. This course is an excellent opportunity for anyone looking to transform their career in 2025.
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Table of Contents
About the Oracle
Oracle Corporation is an American multinational computer technology company headquartered in Austin, Texas. Co-founded in 1977 by Larry Ellison, who remains executive chairman, Oracle ranked as the third-largest software company in the world by revenue and market capitalization as of 2020, and the company’s seat in Forbes Global 2000 was 80 in 2023.
The company sells database software, particularly the Oracle Database, and cloud computing. Oracle’s core application software is a suite of enterprise software products, such as enterprise resource planning (ERP) software, human capital management (HCM) software, customer relationship management (CRM) software, enterprise performance management (EPM) software, Customer Experience Commerce (CX Commerce) and supply chain management (SCM) software.
Eligibility Criteria
Oracle is offering a free SQL Advance Course with a certificate for everyone.
Why Learn Advanced SQL?
SQL is the backbone of database management and data analysis. Here are several reasons why learning advanced SQL can significantly impact your career:
In-Demand Skill: Advanced SQL skills are highly sought after by employers across various industries, including finance, healthcare, technology, and more.
Enhanced Data Analysis: Mastering advanced SQL techniques allows you to perform complex queries, optimize database performance, and gain deeper insights from data.
Career Growth: Proficiency in advanced SQL can lead to higher-paying job opportunities and positions such as data analyst, database administrator, and business intelligence developer.
Versatile Applications: Advanced SQL skills are applicable in numerous roles that require data manipulation and reporting.
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Course Modules
Course Modules
Null
Null is a placeholder for missing or not applicable information. But it introduces a third state to true/false logic: unknown. This module shows you the correct way to query null values.
Subqueries
A subquery is a query buried in another SQL statement. These come in several varieties. This module explains their differences and how to use them.
Order By and Top-N
To guarantee your results are sorted in a particular way, you must use an order by clause. This module shows you how this works. It goes on to explain how to filter results to show the first N rows of a sorted data set.
Analytic Functions
Aggregate functions summarize data, so you get one row per group. But sometimes you need to see the individual rows in the group alongside the totals. To do this you need analytic functions. But that’s not all. Analytic functions enable you to define sliding windows over your rows. So you can compute running totals with ease. This module gives an overview of how to do this.
Pivot and Unpivot
Sometimes you need to summarize data by week or month. But with the dates as columns instead of rows! So you need to convert the row values into column headings. Or the reverse. This module shows you how to do this with the pivot and unpivot clauses.
Union, Minus and Intersect
You can combine rows from two tables to get all the rows, only those in common or those in one table not in the other. This module shows you how to do this with the set operators union, intersect and minus.
Hierarchical Queries
Often a table stores rows with a parent-child relationship. For example, managers to their employees, folders on your computer, and family trees. This module shows you how to display parents and children next to each other using SQL.
Merge
Sometimes when saving a record, you want to add it to the database if it doesn’t exist. But if it does, update the existing values instead. So you need an update-or-insert operation. Luckily there’s one statement that does it all: merge. This module shows you how.
Read Consistency
If someone saves changes to a table you’re querying, what happens? At what point do you see their updates? How do you ensure you get a consistent view of the data? This module explains how Oracle Database’s read consistency model works and discusses the implications for your code.
Course Review
A recap of the course material and a live Q&A for you to put your questions to the experts! There are no videos or tutorials in this module. Just a series of quizzes to check you’ve understood all the course material.
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How To Apply?
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