Order SQL query logical processing steps
SQL Query Logical Processing Order
Consider the following SQL query written in SQL-92 style:
SELECT foo, COUNT(foo)
FROM pokes
WHERE foo > 10
GROUP BY foo
HAVING COUNT(foo) > 1
ORDER BY foo;
Identify the correct logical order in which the SQL clauses are conceptually processed, according to the SQL-92 standard.
Options:
- A.
FROM → WHERE → GROUP BY → HAVING → SELECT → ORDER BY - B.
FROM → GROUP BY → WHERE → HAVING → SELECT → ORDER BY - C.
FROM → WHERE → GROUP BY → HAVING → ORDER BY → SELECT - D.
FROM → WHERE → ORDER BY → GROUP BY → HAVING → SELECT
AI interview prep
Core dilemma
Moving beyond rote memorization of SQL syntax to a deep, conceptual understanding of how a database engine logically processes data, which is critical for writing correct, performant, and maintainable queries.
2 tradeoffs and 2 stress tests locked
Interview prep
Unlock the interviewer X-Ray rubric, tradeoff matrix, stress tests, clarifying questions, and key concepts.
Order SQL query logical processing steps
SQL Query Logical Processing Order
Consider the following SQL query written in SQL-92 style:
SELECT foo, COUNT(foo)
FROM pokes
WHERE foo > 10
GROUP BY foo
HAVING COUNT(foo) > 1
ORDER BY foo;
Identify the correct logical order in which the SQL clauses are conceptually processed, according to the SQL-92 standard.
Options:
- A.
FROM → WHERE → GROUP BY → HAVING → SELECT → ORDER BY - B.
FROM → GROUP BY → WHERE → HAVING → SELECT → ORDER BY - C.
FROM → WHERE → GROUP BY → HAVING → ORDER BY → SELECT - D.
FROM → WHERE → ORDER BY → GROUP BY → HAVING → SELECT