PostgreSQL quiz

Test your PostgreSQL knowledge with a free interactive quiz — 46 questions with answers and explanations. No signup needed to play.

What is `LIKE` used for in SQL?

1. What is `LIKE` used for in SQL?
2. What is a transaction in PostgreSQL?
3. What does `ON CONFLICT` do in PostgreSQL?
4. What is `EXPLAIN` in PostgreSQL?
5. What is a NULL value in SQL?
6. What is the difference between `WHERE` and `HAVING`?
7. What is a foreign key?
8. What is the difference between `CHAR`, `VARCHAR`, and `TEXT` in PostgreSQL?
9. What is a primary key?
10. What is a schema in PostgreSQL?
11. What is a `CHECK` constraint?
12. What is a `VIEW` in PostgreSQL?

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