Browse All Questions

What is a subquery?

SQL FundamentalsEasy

Try Now

Which data type is best for storing a person’s name?

SQL FundamentalsEasy

Try Now

Which data type would you choose to store a person’s age?

SQL FundamentalsEasy

Try Now

Which statement adds a new column to an existing table?

SQL FundamentalsEasy

Try Now

Which statement permanently removes a table and all its data from the database?

SQL FundamentalsEasy

Try Now

Which statement creates a new table in a database?

SQL FundamentalsEasy

Try Now

What is a foreign key?

SQL FundamentalsEasy

Try Now

What is a primary key?

SQL FundamentalsEasy

Try Now

Which condition correctly filters out NULL values?

SQL FundamentalsEasy

Try Now

What does WHERE age BETWEEN 18 AND 30 return?

SQL FundamentalsEasy

Try Now

Which operator checks whether a value exists within a list of values?

SQL FundamentalsEasy

Try Now

What does the LIKE ‘_a%’ pattern match?

SQL FundamentalsEasy

Try Now

Which wildcard character matches any sequence of characters in a LIKE pattern?

SQL FundamentalsEasy

Try Now

What keyword is used to give a column or table a temporary name in a query?

SQL FundamentalsEasy

Try Now

What does MAX(score) return?

SQL FundamentalsEasy

Try Now

How do you check if a column value is NULL in SQL?

SQL FundamentalsEasy

Try Now

Which type of JOIN returns only rows where there is a match in both tables?

SQL FundamentalsEasy

Try Now

What happens if you run DELETE FROM employees without a WHERE clause?

SQL FundamentalsEasy

Try Now