Let's start from the simple one.
w3schools.com platform will be used for exercising
Task #1.
- Output unique countries (Country) from the Customers table, where CustomerName does NOT start with "A" and where City is anything but London.
- Sort records in reverse order.
- Limit the number of rows to a single row.
#task
w3schools.com platform will be used for exercising
Task #1.
- Output unique countries (Country) from the Customers table, where CustomerName does NOT start with "A" and where City is anything but London.
- Sort records in reverse order.
- Limit the number of rows to a single row.
#task
Task#2.
From the Products table, select the names of all products whose price values are integers, in addition, they must be products that do not belong to the following categories (CategoryID): 1, 2, 3, 4, 5, 6.
You can try your query here
You can share your solution in comment once the task is solved.
#task
From the Products table, select the names of all products whose price values are integers, in addition, they must be products that do not belong to the following categories (CategoryID): 1, 2, 3, 4, 5, 6.
You can try your query here
You can share your solution in comment once the task is solved.
#task
Which one of the following SQL queries will delete the "customers" table and all its content from the database?
Anonymous Quiz
29%
DROP customers;
4%
DELETE customers;
19%
DELETE * FROM customers;
11%
DELETE * FROM <database> WHERE table="customers";
37%
DROP TABLE customers;
Select the only aggregation function from the list
Anonymous Quiz
4%
EXCEPT
7%
JOIN
3%
LIKE
83%
MIN
1%
EXISTS
0%
CASE
2%
IN
Which one of the following queries will limit selection by only 3 rows?
Anonymous Quiz
2%
SELECT * FROM Customers 3
77%
SELECT * FROM Customers LIMIT 3
5%
SELECT * FROM Customers 3 LIMIT
3%
SELECT 3 LIMITS * FROM Customers
14%
SELECT LIMIT(3) * FROM Customers
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