Course details

Oracle Database 12c - Introduction to SQL: Working with Joins and Subqueries

Overview/Description
Target Audience
Prerequisites
Expected Duration
Lesson Objectives
Course Number
Expertise Level

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Overview/Description
Database normalization is good practice when building a relational database to minimize data redundancy. In this course, you will learn how to join tables together to view information across multiple tables, how to write subqueries, as well as the more advanced features of the SELECT statements used to obtain values based on an unknown conditional value. This course is one of a series in the SkillSoft learning path that cover the objectives for the Oracle Database 12c: SQL Fundamentals exam (1ZO-061). The exam is part of the Oracle Certified Associate certification.

Target Audience
Functional Implementer, Forms Developer, System Analysts, Application Developers, PL/SQL Developer and learners looking to obtain the Oracle Database 12c Administrator Certified Associated designation or to become an OPN Certified Specialist.

Prerequisites
None

Expected Duration (hours)
1.9

Lesson Objectives

Oracle Database 12c - Introduction to SQL: Working with Joins and Subqueries

start the course

describe how to obtain data from multiple tables using JOINS in a SQL statement

join tables automatically based on columns with matching data types and names to retrieve data in a SQL statement

use the USING clause to specify columns used for an equijoin to retrieve records in a SQL statement

use aliases with the USING clause and use prefixes to join multiple tables in a SQL statement

use the ON clause when you specify join conditions in the WHERE clause in a SQL statement

using a three-way join to join three tables in a SQL statement

use the AND clause or the WHERE clause to apply additional conditions to a join in a SQL statement

use a self-join to join a table to itself in a SQL statement

use a join condition containing a non-equijoin in a SQL statement

use an OUTER join to return records with no direct match in a SQL statement

describe the differences between an INNER and OUTER join

use a left outer join in a SQL statement

use a right outer join in a SQL statement

use a full outer join in a SQL statement

describe the generation of a Cartesian product returned by a SQL statement

create cross joins in a SQL statement

use a subquery to solve a problem in a SQL statement

describe the rules, guidelines, and types of subqueries used in a SQL statement

use a single-row subquery to return one row in a SQL statement

display data from a main query using a group function in a subquery to return a single row in a SQL statement

use a subquery in the HAVING clause of a SQL statement

identify common errors that occur when an incorrect number of rows is returned by a single-row subquery in a SQL statement

describe multiple-row subqueries in a SQL statement

use the IN, ANY, and ALL operators in multiple-row subqueries in a SQL statement

use a multiple-column subquery to return more than one column to the outer query in a SQL statement

describe NULL values in a subquery and use the NOT IN operator in a SQL statement

display data from multiple tables using joins in a SQL statement

combine two queries by making use of a subquery in a SQL statement

Course Number:
od_insq_a05_it_enus

Expertise Level
Beginner