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TEST SQL COURSE E2E
course content

Course Content

TEST SQL COURSE E2E

TEST SQL COURSE E2E

1. Sorting Retrieved Data
Sorting DataChallengeSorting by Multiple Columns
2. Retrieving Data
Retrieving Individual ColumnsRetrieving Multiple Columns Retrieving Distinct Rows
3. Failing init script
4. Long execution init script

bookRetrieving Individual Columns

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

What is SQL?

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

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 language that returns a data set (sample) from the database. In order to use the SELECT operator, we should specify what exactly we want to select and where we want to select it from.


              
12

            
SELECT continent FROM country;
copy

We used the SELECT statement in the previous query to get a single continent column from the country table. We need to specify the column name immediately after the SELECT keyword, and the FROM keyword specifies the name of the table from which we want to retrieve data.

Task

You have to retrieve a capital column from the country table.

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 2. Chapter 1
toggle bottom row

bookRetrieving Individual Columns

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

What is SQL?

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

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 language that returns a data set (sample) from the database. In order to use the SELECT operator, we should specify what exactly we want to select and where we want to select it from.


              
12

            
SELECT continent FROM country;
copy

We used the SELECT statement in the previous query to get a single continent column from the country table. We need to specify the column name immediately after the SELECT keyword, and the FROM keyword specifies the name of the table from which we want to retrieve data.

Task

You have to retrieve a capital column from the country table.

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 2. Chapter 1
toggle bottom row

bookRetrieving Individual Columns

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

What is SQL?

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

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 language that returns a data set (sample) from the database. In order to use the SELECT operator, we should specify what exactly we want to select and where we want to select it from.


              
12

            
SELECT continent FROM country;
copy

We used the SELECT statement in the previous query to get a single continent column from the country table. We need to specify the column name immediately after the SELECT keyword, and the FROM keyword specifies the name of the table from which we want to retrieve data.

Task

You have to retrieve a capital column from the country table.

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!

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

What is SQL?

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

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 language that returns a data set (sample) from the database. In order to use the SELECT operator, we should specify what exactly we want to select and where we want to select it from.


              
12

            
SELECT continent FROM country;
copy

We used the SELECT statement in the previous query to get a single continent column from the country table. We need to specify the column name immediately after the SELECT keyword, and the FROM keyword specifies the name of the table from which we want to retrieve data.

Task

You have to retrieve a capital column from the country table.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Section 2. 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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