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Exercise:

Select all records from the Customers where the PostalCode column is empty.

SELECT * FROM Customers WHERE PostalCode IS NULL;

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SELECT * FROM Customers
WHERE w3exercise_input_no_0
 w3exercise_input_no_1
 w3exercise_input_no_2
;

Completed 0 of 52 Exercises:

SQL Select

Exercise 1 Exercise 2 Exercise 3 Go to SQL Select Tutorial

SQL Where

Exercise 1 Exercise 2 Exercise 3 Exercise 4 Exercise 5 Go to SQL Where Tutorial

SQL Order By

Exercise 1 Exercise 2 Exercise 3 Go to SQL Order By Tutorial

SQL Insert

Exercise 1 Go to SQL Insert Tutorial

SQL Null

Exercise 1 Exercise 2 Go to SQL Null Tutorial

SQL Update

Exercise 1 Exercise 2 Exercise 3 Go to SQL Update Tutorial

SQL Delete

Exercise 1 Exercise 2 Go to SQL Delete Tutorial

SQL Functions

Exercise 1 Exercise 2 Exercise 3 Exercise 4 Exercise 5 Go to SQL Functions Tutorial

SQL Like

Exercise 1 Exercise 2 Exercise 3 Exercise 4 Exercise 5 Go to SQL Like Tutorial

SQL Wildcards

Exercise 1 Exercise 2 Exercise 3 Exercise 4 Go to SQL Wildcards Tutorial

SQL In

Exercise 1 Exercise 2 Go to SQL In Tutorial

SQL Between

Exercise 1 Exercise 2 Exercise 3 Go to SQL Between Tutorial

SQL Alias

Exercise 1 Exercise 2 Go to SQL Alias Tutorial

SQL Join

Exercise 1 Exercise 2 Exercise 3 Go to SQL Join Tutorial

SQL Group By

Exercise 1 Exercise 2 Go to SQL Group By Tutorial

SQL Database

Exercise 1 Exercise 2 Exercise 3 Exercise 4 Exercise 5 Exercise 6 Exercise 7 Go to SQL Database Tutorial