Deleting Records Based on a Condition

This challenge focuses on the fundamental SQL operation of deleting data. You will be tasked with removing specific records from a table based on a given condition. Mastering DELETE statements is crucial for data management and maintaining the integrity of your databases.

Problem Description

Your task is to implement a SQL DELETE statement that removes records from a table named Products. The records to be deleted are those where the stock_quantity is less than a specified threshold.

Requirements:

You must use a DELETE statement.
The DELETE statement should target the Products table.
The condition for deletion must be based on the stock_quantity column. Records with stock_quantity less than a given minimum_stock_level should be removed.

Expected Behavior:

After executing your DELETE statement, the Products table should no longer contain any rows where the stock_quantity is below the provided minimum_stock_level. Rows with stock_quantity equal to or greater than the minimum_stock_level should remain untouched.

Edge Cases:

No records to delete: If no records meet the deletion criteria, the DELETE statement should execute without errors and the table should remain unchanged.
All records deleted: If all records in the table have a stock_quantity below the minimum_stock_level, all rows should be deleted.

Examples

Example 1:

Initial Products Table:

product_id	product_name	stock_quantity
1	Apple	50
2	Banana	15
3	Cherry	100
4	Date	5
5	Elderberry	20

minimum_stock_level = 20

Output (after executing DELETE):

product_id	product_name	stock_quantity
1	Apple	50
3	Cherry	100
5	Elderberry	20

Explanation: Records with product_id 2 (stock_quantity 15) and 4 (stock_quantity 5) were deleted because their stock_quantity was less than 20.

Example 2:

Initial Products Table:

product_id	product_name	stock_quantity
10	Fig	5
11	Grape	8

minimum_stock_level = 10

Output (after executing DELETE): (Empty Table)

Explanation: Both records had a stock_quantity less than 10, so both were deleted.

Example 3: No records to delete

Initial Products Table:

product_id	product_name	stock_quantity
20	Honeydew	30
21	Iced Tea	45

minimum_stock_level = 25

Output (after executing DELETE):

product_id	product_name	stock_quantity
20	Honeydew	30
21	Iced Tea	45

Explanation: No records had a stock_quantity less than 25, so no records were deleted.

Constraints

The Products table will contain at least one row.
The stock_quantity column will always contain non-negative integer values.
The minimum_stock_level will be a non-negative integer.
Your solution should be a single SQL DELETE statement.

Notes

Consider the syntax for DELETE statements in SQL, specifically how to specify the table and the condition.
Be careful with the comparison operator used in your WHERE clause.
It is good practice to understand the potential impact of a DELETE statement before executing it in a production environment. You might consider running a SELECT statement with the same WHERE clause first to preview which rows would be affected.

Deleting Records Based on a Condition

Problem Description

Requirements:

You must use a DELETE statement.
The DELETE statement should target the Products table.
The condition for deletion must be based on the stock_quantity column. Records with stock_quantity less than a given minimum_stock_level should be removed.

Expected Behavior:

Edge Cases:

No records to delete: If no records meet the deletion criteria, the DELETE statement should execute without errors and the table should remain unchanged.
All records deleted: If all records in the table have a stock_quantity below the minimum_stock_level, all rows should be deleted.

Examples

Example 1:

Initial Products Table:

product_id	product_name	stock_quantity
1	Apple	50
2	Banana	15
3	Cherry	100
4	Date	5
5	Elderberry	20

minimum_stock_level = 20

Output (after executing DELETE):

product_id	product_name	stock_quantity
1	Apple	50
3	Cherry	100
5	Elderberry	20

Explanation: Records with product_id 2 (stock_quantity 15) and 4 (stock_quantity 5) were deleted because their stock_quantity was less than 20.

Example 2:

Initial Products Table:

product_id	product_name	stock_quantity
10	Fig	5
11	Grape	8

minimum_stock_level = 10

Output (after executing DELETE): (Empty Table)

Explanation: Both records had a stock_quantity less than 10, so both were deleted.

Example 3: No records to delete

Initial Products Table:

product_id	product_name	stock_quantity
20	Honeydew	30
21	Iced Tea	45

minimum_stock_level = 25

Output (after executing DELETE):

product_id	product_name	stock_quantity
20	Honeydew	30
21	Iced Tea	45

Explanation: No records had a stock_quantity less than 25, so no records were deleted.

Constraints

The Products table will contain at least one row.
The stock_quantity column will always contain non-negative integer values.
The minimum_stock_level will be a non-negative integer.
Your solution should be a single SQL DELETE statement.

Notes

Consider the syntax for DELETE statements in SQL, specifically how to specify the table and the condition.
Be careful with the comparison operator used in your WHERE clause.
It is good practice to understand the potential impact of a DELETE statement before executing it in a production environment. You might consider running a SELECT statement with the same WHERE clause first to preview which rows would be affected.