Conteúdo do Curso
SQL Basics
SQL Basics
Unique values from column
In real life, you may work with big tables containing thousands of rows and lots of columns. For example, you may have a database with all the users who have visited your site, and you want to know all the countries that attended your site.
In SQL, to extract unique values from the column use the DISTINCT statement. For example, to extract unique countries from the table visitors use:
SELECT DISTINCT(country) FROM visitors
Tarefa
From the audi_cars table extract all the unique models of cars.
Mude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixoObrigado pelo seu feedback!
Unique values from column
In real life, you may work with big tables containing thousands of rows and lots of columns. For example, you may have a database with all the users who have visited your site, and you want to know all the countries that attended your site.
In SQL, to extract unique values from the column use the DISTINCT statement. For example, to extract unique countries from the table visitors use:
SELECT DISTINCT(country) FROM visitors
Tarefa
From the audi_cars table extract all the unique models of cars.
Mude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixoObrigado pelo seu feedback!
Unique values from column
In real life, you may work with big tables containing thousands of rows and lots of columns. For example, you may have a database with all the users who have visited your site, and you want to know all the countries that attended your site.
In SQL, to extract unique values from the column use the DISTINCT statement. For example, to extract unique countries from the table visitors use:
SELECT DISTINCT(country) FROM visitors
Tarefa
From the audi_cars table extract all the unique models of cars.
Mude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixoObrigado pelo seu feedback!
In real life, you may work with big tables containing thousands of rows and lots of columns. For example, you may have a database with all the users who have visited your site, and you want to know all the countries that attended your site.
In SQL, to extract unique values from the column use the DISTINCT statement. For example, to extract unique countries from the table visitors use:
SELECT DISTINCT(country) FROM visitors
Tarefa
From the audi_cars table extract all the unique models of cars.
Mude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixoMude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixo