Learn

Learning Tracks

Practice

Quizzes & Challenges

/

TEST E2E PROGRESS SQL

THIRD CHAPTER

1. What columns are required when using the `UNION` clause in SQL?

2. How does the `UNION` clause treat duplicate rows by default?

What columns are required when using the UNION clause in SQL?

Select the correct answer

Columns must have unique names across all SELECT statements

Columns must have the same number and order in all SELECT statements

Columns must have different data types in each SELECT statement

How does the UNION clause treat duplicate rows by default?

Select the correct answer

It includes all duplicate rows

It randomly selects one instance of each duplicate row to include

It removes duplicate rows

Tudo estava claro?

Como podemos melhorá-lo?

Obrigado pelo seu feedback!

Seção 2. Capítulo 3

Pergunte à IA

Pergunte à IA

Pergunte o que quiser ou experimente uma das perguntas sugeridas para iniciar nosso bate-papo

Incrível!

Completion taxa melhorada para 16.67

THIRD CHAPTER

Deslize para mostrar o menu

1. What columns are required when using the `UNION` clause in SQL?

2. How does the `UNION` clause treat duplicate rows by default?

What columns are required when using the UNION clause in SQL?

Select the correct answer

Columns must have unique names across all SELECT statements

Columns must have the same number and order in all SELECT statements

Columns must have different data types in each SELECT statement

How does the UNION clause treat duplicate rows by default?

Select the correct answer

It includes all duplicate rows

It randomly selects one instance of each duplicate row to include

It removes duplicate rows

Tudo estava claro?

Como podemos melhorá-lo?

Obrigado pelo seu feedback!

Seção 2. Capítulo 3

some-alt