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Tóm tắt khóa học:

This Oracle Database: Introduction to SQL training helps you write subqueries, combine multiple queries into a single query using SET operators and report aggregated data using group functions. Learn this and more through hands-on exercises.

Thời lượng khóa học: 5 ngày


Nội dung khóa học:

This Oracle Database: Introduction to SQL training helps you write subqueries, combine multiple queries into a single query using SET operators and report aggregated data using group functions. Learn this and more through hands-on exercises.

Learn To:

  • Understand the basic concepts of relational databases ensure refined code by developers.
  • Create reports of sorted and restricted data.
  • Run data manipulation statements (DML).
  • Control database access to specific objects.
  • Manage schema objects.
  • Manage objects with data dictionary views.
  • Retrieve row and column data from tables.
  • Control privileges at the object and system level.
  • Create indexes and constraints; alter existing schema objects.
  • Create and query external tables.

Course Topics:

Introduction

  • Course Objectives, Course Agenda and Appendixes Used in this Course
  • Overview of Oracle Database 12c and Related Products
  • Overview of relational database management concepts and terminologies
  • Introduction to SQL and its development environments
  • What is Oracle SQL Developer?
  • Starting SQL*Plus from Oracle SQL Developer
  • The Human Resource (HR) Schema
  • Tables used in the Course

Retrieving Data using the SQL SELECT Statement

  • Capabilities of the SELECT statement
  • Arithmetic expressions and NULL values in the SELECT statement
  • Column aliases
  • Use of concatenation operator, literal character strings, alternative quote operator, and the DISTINCT keyword
  • Use of the DESCRIBE command

Restricting and Sorting Data

  • Limiting the Rows
  • Rules of precedence for operators in an expression
  • Substitution Variables
  • Using the DEFINE and VERIFY command

Using Single-Row Functions to Customize Output

  • Describe the differences between single row and multiple row functions
  • Manipulate strings with character function in the SELECT and WHERE clauses
  • Manipulate numbers with the ROUND, TRUNC and MOD functions
  • Perform arithmetic with date data
  • Manipulate dates with the date functions

Using Conversion Functions and Conditional Expressions

  • Describe implicit and explicit data type conversion
  • Use the TO_CHAR, TO_NUMBER, and TO_DATE conversion functions
  • Nest multiple functions
  • Apply the NVL, NULLIF, and COALESCE functions to data
  • Use conditional IF THEN ELSE logic in a SELECT statement

Reporting Aggregated Data Using the Group Functions

  • Group Functions
  • Creating Groups of Data
  • Restricting Group Results

Displaying Data from Multiple Tables Using Joins

  • Introduction to JOINS
  • Types of Joins
  • Natural join
  • Self-join
  • Non equijoins
  • OUTER join

Using Subqueries to Solve Queries

  • Introduction to Subqueries
  • Single Row Subqueries
  • Multiple Row Subqueries

Using the SET Operators

  • Set Operators
  • UNION and UNION ALL operator
  • INTERSECT operator
  • MINUS operator
  • Matching the SELECT statements
  • Using ORDER BY clause in set operations

Managing Tables using DML statements

  • Data Manipulation Language
  • Database Transactions

Introduction to Data Definition Language

  • Data Definition Language

Introduction to Data Dictionary Views

  • Introduction to Data Dictionary
  • Describe the Data Dictionary Structure
  • Using the Data Dictionary views
  • Querying the Data Dictionary Views

Creating Sequences, Synonyms, Indexes

  • Overview of sequences
  • Overview of synonyms
  • Overview of indexes

Creating Views

  • Overview of views

Managing Schema Objects

  • Managing constraints
  • Creating and using temporary tables
  • Creating and using external tables

Retrieving Data by Using Subqueries

  • Retrieving Data by Using a Subquery as Source
  • Working with Multiple-Column subqueries
  • Using Scalar subqueries in SQL
  • Correlated Subqueries
  • Working with the WITH clause

Manipulating Data by Using Subqueries

  • Using Subqueries to Manipulate Data
  • Inserting by Using a Subquery as a Target
  • Using the WITH CHECK OPTION Keyword on DML Statements
  • Using Correlated Subqueries to Update and Delete rows

Controlling User Access

  • System privileges
  • Creating a role
  • Object privileges
  • Revoking object privileges

Manipulating Data

  • Overview of the Explicit Default Feature
  • Using multitable INSERTs
  • Using the MERGE statement
  • Performing flashback operations
  • Tracking Changes in Data

Managing Data in Different Time Zones

  • Working with CURRENT_DATE, CURRENT_TIMESTAMP,and LOCALTIMESTAMP
  • Working with INTERVAL data types