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Retrieving Individual Columns | Retrieving Data
TEST SQL COURSE E2E
course content

Contenido del Curso

TEST SQL COURSE E2E

TEST SQL COURSE E2E

1. Sorting Retrieved Data
2. Retrieving Data
3. Failing init script
4. Long execution init script

book
Retrieving 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.

Tarea
test

Swipe to show code editor

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

Switch to desktopCambia al escritorio para practicar en el mundo realContinúe desde donde se encuentra utilizando una de las siguientes opciones
¿Todo estuvo claro?

¿Cómo podemos mejorarlo?

¡Gracias por tus comentarios!

Sección 2. Capítulo 1
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book
Retrieving 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.

Tarea
test

Swipe to show code editor

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

Switch to desktopCambia al escritorio para practicar en el mundo realContinúe desde donde se encuentra utilizando una de las siguientes opciones
¿Todo estuvo claro?

¿Cómo podemos mejorarlo?

¡Gracias por tus comentarios!

Sección 2. Capítulo 1
Switch to desktopCambia al escritorio para practicar en el mundo realContinúe desde donde se encuentra utilizando una de las siguientes opciones
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