Deleting rows from a table in SQL Which command correctly removes one or more rows from the table named CUSTOMER while allowing you to filter which rows are affected?

Introduction / Context:SQL provides specific statements for distinct tasks: creating structures, modifying data, and dropping objects. Deleting rows is a data manipulation task and must be expressed with the correct DML statement so that the DBMS can enforce constraints, log changes, and maintain transactional integrity.

Given Data / Assumptions:

• A table named CUSTOMER already exists.
• You intend to remove one or more rows based on a condition.
• You want transactional, logged deletion that can be rolled back if needed.

Concept / Approach:

Use DELETE to remove rows. Pair it with an appropriate WHERE clause to target only the intended subset. Without a WHERE clause, all rows are removed. DROP is for removing entire objects like tables or views; UPDATE modifies existing values; TRUNCATE removes all rows but does not accept a WHERE clause and has different logging/locking behavior depending on the DBMS.

Step-by-Step Solution:

Verification / Alternative check:

DBMS documentation shows DELETE as the canonical row-removal command with optional WHERE; DROP removes the table itself; TRUNCATE is a fast, all-rows operation without WHERE.

Why Other Options Are Wrong:

• REMOVE FROM: not valid SQL.
• DROP FROM: drops objects, not rows.
• UPDATE FROM: changes values, does not delete.
• TRUNCATE ... WHERE: TRUNCATE has no WHERE and removes all rows.

Common Pitfalls:

• Forgetting the WHERE clause and deleting all rows unintentionally.
• Violating foreign key constraints; use ON DELETE rules or delete in the correct order.

Final Answer:

DELETE FROM CUSTOMER WHERE ...