Which Statement About Table Joins in SQL Is True

question 16

Multiple Choice

Which statement about table joins in SQL is true?

• A) Self-joins usually do not include WHERE or ORDER BY clauses.
• B) You cannot perform a self-join on a table's primary key column.
• C) Joins must be performed between at least two different tables.
• D) SQL has no problem treating one table with two aliases as two tables.

---

Definitions:

Depression

An emotional health issue defined by a continuous downhearted mood or an absence of pleasure in tasks, significantly affecting daily operations.

Beck

Refers to Aaron T. Beck, a psychiatrist known for his research in psychotherapy, cognitive therapy, and cognitive behavioral therapy.

Systematic Desensitization

A behavioral therapy technique used to reduce phobic responses and anxiety through gradual exposure to the feared object or situation.

Anxiety-Provoking Situations

Circumstances or events that induce a state of anxiety or stress, often used in psychological studies to understand coping mechanisms.