TRUNCATE and DELETE are both SQL commands used to remove data from tables, but they differ significantly in performance, rollback capability, and logging. This quiz on SQL truncate vs delete highlights their differences and best use cases.
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Which of the following commands is DDL (Data Definition Language)?
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Question 5 of 15
5. Question
Can DELETE operations be rolled back?
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Question 6 of 15
6. Question
Can TRUNCATE be rolled back?
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Question 7 of 15
7. Question
Which command is faster for removing all rows from a large table?
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Question 8 of 15
8. Question
Which command fires triggers defined on the table?
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Question 9 of 15
9. Question
After using TRUNCATE, what happens to the table structure?
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Question 10 of 15
10. Question
Which command logs each row deleted in the transaction log?
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Question 11 of 15
11. Question
Which command resets the identity column (auto-increment) by default in SQL Server?
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Question 12 of 15
12. Question
Can you delete rows from a table referenced by a foreign key using TRUNCATE?
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Question 13 of 15
13. Question
What is a key difference between DELETE and TRUNCATE in terms of transaction logs?
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Question 14 of 15
14. Question
Which of the following can result in better performance for large tables?
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Question 15 of 15
15. Question
What happens if you use DELETE without a WHERE clause?
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Summary
Understanding the difference between TRUNCATE and DELETE is vital for efficient and safe data management in SQL. These MCQs cover syntax, behavior, performance, and rollback support of each command.
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