SQL: Find the name and price of the cheapest item(s)
SQL Basic Select Statement: Exercise-30 with Solution
From the following table, write a SQL query to find the cheapest item(s). Return pro_name and, pro_price.
Sample table: item_mast
Sample Solution:
SELECT pro_name, pro_price
FROM item_mast
WHERE pro_price =
(SELECT MIN(pro_price) FROM item_mast);
Output of the Query:
pro_name pro_price ZIP drive 250.00 Mouse 250.00
Practice Online
Query Visualization:
Duration:

Rows:

Cost:

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Previous: From the following table, write a SQL query to calculate average price of the items of each company. Return average price and company code.
Next: From the following table, write a SQL query to find unique last name of all employees. Return emp_lname.
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SQL: Tips of the Day
Can a foreign key be NULL and/or duplicate?
First remember a Foreign key simply requires that the value in that field must exist first in a different table (the parent table). That is all an Foreign key is by definition. Null by definition is not a value. Null means that we do not yet know what the value is.
Ref: https://bit.ly/3uVu3OS
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