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Retrieving Individual Columns | Retrieving Data
Introduction to SQL
course content

Course Content

Introduction to SQL

Introduction to SQL

1. Retrieving Data
2. Sorting Retrieved Data
3. Filtering Data
4. Advanced Data Filtering
5. Aggregate Functions

bookRetrieving Individual Columns

What is SQL?

SQL is a programming language for user interaction with databases, used to query, update, and manage databases.

Database

A database is an organized structure designed to store, modify, and process large amounts of data.

Let’s get started! In this course, we will work with a country database containing a country table. Let's look at this table.

SELECT is an operator in the SQL language that retrieves a data set (sample) from the database. To use the SELECT operator effectively, we need to specify exactly what we want to select and where we want to select it from.

1
SELECT continent FROM country;
copy

In our previous query, we utilized the SELECT to retrieve a single continent column from the country table. It's important to note that you must specify the column name immediately after the SELECT keyword, and the FROM keyword specifies the name of the table from which we wish to retrieve data.

Task

Now, let's retrieve a capital column from the country table.

Once you've completed this task, click the button below the code to check your solution.

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Everything was clear?

How can we improve it?

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Section 1. Chapter 1
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bookRetrieving Individual Columns

What is SQL?

SQL is a programming language for user interaction with databases, used to query, update, and manage databases.

Database

A database is an organized structure designed to store, modify, and process large amounts of data.

Let’s get started! In this course, we will work with a country database containing a country table. Let's look at this table.

SELECT is an operator in the SQL language that retrieves a data set (sample) from the database. To use the SELECT operator effectively, we need to specify exactly what we want to select and where we want to select it from.

1
SELECT continent FROM country;
copy

In our previous query, we utilized the SELECT to retrieve a single continent column from the country table. It's important to note that you must specify the column name immediately after the SELECT keyword, and the FROM keyword specifies the name of the table from which we wish to retrieve data.

Task

Now, let's retrieve a capital column from the country table.

Once you've completed this task, click the button below the code to check your solution.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

Section 1. Chapter 1
toggle bottom row

bookRetrieving Individual Columns

What is SQL?

SQL is a programming language for user interaction with databases, used to query, update, and manage databases.

Database

A database is an organized structure designed to store, modify, and process large amounts of data.

Let’s get started! In this course, we will work with a country database containing a country table. Let's look at this table.

SELECT is an operator in the SQL language that retrieves a data set (sample) from the database. To use the SELECT operator effectively, we need to specify exactly what we want to select and where we want to select it from.

1
SELECT continent FROM country;
copy

In our previous query, we utilized the SELECT to retrieve a single continent column from the country table. It's important to note that you must specify the column name immediately after the SELECT keyword, and the FROM keyword specifies the name of the table from which we wish to retrieve data.

Task

Now, let's retrieve a capital column from the country table.

Once you've completed this task, click the button below the code to check your solution.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

What is SQL?

SQL is a programming language for user interaction with databases, used to query, update, and manage databases.

Database

A database is an organized structure designed to store, modify, and process large amounts of data.

Let’s get started! In this course, we will work with a country database containing a country table. Let's look at this table.

SELECT is an operator in the SQL language that retrieves a data set (sample) from the database. To use the SELECT operator effectively, we need to specify exactly what we want to select and where we want to select it from.

1
SELECT continent FROM country;
copy

In our previous query, we utilized the SELECT to retrieve a single continent column from the country table. It's important to note that you must specify the column name immediately after the SELECT keyword, and the FROM keyword specifies the name of the table from which we wish to retrieve data.

Task

Now, let's retrieve a capital column from the country table.

Once you've completed this task, click the button below the code to check your solution.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Section 1. Chapter 1
Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
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