
Practice with LiveSQL for Oracle SQL, compare online environments accessible from anywhere with internet to local databases, create tables with scripts, and learn about persistence when logging off.
Identify null values and apply is null or is not null to filter records in Oracle SQL, using a books table with a name column as examples.
Explore Oracle SQL constraints, including primary key, unique (single and composite), foreign key, and check constraints, and learn how these enforce data integrity and referential integrity.
Create a new table as select to copy all columns and rows from a source table, or copy only selected columns, or create an empty structure with a never-fulfilled condition.
Learn to update existing records in Oracle sql by setting column values and using where clauses, including date and price updates and the effect of omitting where.
The distinct clause removes duplicates from a select result set. Apply it to one column or multiple columns to enforce unique values or unique combinations, using a where condition.
Explore left join and right join concepts in Oracle SQL by linking two tables with on conditions, matching records, and understanding when matches exist or are absent.
Explore old syntax joins in Oracle SQL, including left and right joins, and see how matched and unmatched rows appear in simple select examples.
Learn to use the Oracle dual table to retrieve a single value and to compute expressions, such as 1 plus 10 plus 100, from dual.
Explore Oracle sql numeric functions, including how to use remainder and division to compute values, round numbers, and format salaries with simple examples.
Explore Oracle SQL datetime functions to extract day, month, and year, format dates, compute intervals such as months_between, and truncate or round time components.
Explore encoding and decoding functions in Oracle SQL and learn the decode and size functions. Review the syntax with examples showing bytes per letter.
Learn how the group by clause creates grouped results with aggregate expressions, such as sum of salaries, to analyze department and city data.
Follow chapters and lessons, complete an exercise to reinforce concepts, and practice class-based tasks, including evaluating numbers greater than 8 and creating five items.
Learn to use sequences in Oracle SQL to generate primary key values and automate key creation by setting start, minimum, maximum, and increment options.
Explore a sample schema in live sql to understand tables, columns, and sequences, and learn basic object models and select operations for Oracle SQL beginners.
Learn basic Oracle SQL concepts including joining two tables, using the sequence, and applying simple policies for employees with the same name.
Explore how privileges and roles control access in Oracle SQL, and how licensing and access requirements determine who can perform actions.
Master subqueries in Oracle sql for beginners, uncovering fundamental query techniques and how the main query interacts with subqueries. See examples and practical uses highlighted for clarity.
Learn the basic concepts that you will need to write SQL statements.
What is SQL?
SQL (Structured Query Language) is the primary language responsible for managing data and data structures contained within a relational database management system (RDBMS). Put simply, SQL is the language you use to interact with a database.
Build a strong foundation in SQL with this tutorial for beginners.
Database basic concepts
Retrieving, filter data
Creating tables, modify tables
Manipulate data, sort data
Join tables
SQL functions
Grouping result set.
Database objects
Understanding users/ roles/privileges
Complex queries
Understanding the concept of transactional database
SQL types classification
Next steps
Why should you learn SQL?
Because you can earn really good money : SQL Developers have good incomes.
Because SQL is one of the most sought-after skills by hiring employers : Employers are seeking individuals who know SQL
Because you can get an answer to any question you ask about your data stores in a database :Think of all the questions you ask about your data on a regular basis. What were our sales last year? What is the average income for our employees? How many goods entered the company this month? Those are all questions that can be answered using SQL.
Because you no longer have to deal with Excel crashing : Ever crashed Excel because you had a ton of rows in a spreadsheet? Relational databases are designed to store millions and millions of rows of data. And you will need SQL for communicating with the database.
Content and Overview
Suitable for beginners, through this course of 84 lectures and 5.5 hours of content, you’ll learn all of the SQL fundamentals and establish a strong understanding of the concepts behind databases. Each lessons have attached files with examples, you can put your new skills into practical use immediately.
No need for a software installation for starting with the examples. No need for a database installation. You just create an free account on Livesql and you are ready to start, all the steps are described in the course
The Next Steps lesson with show you what are the next steps if you want to take the experience accumulated in this course to the next level.