Query Planning & Statistics (EXPLAIN ANALYZE) Quiz Home › PostgreSQL DBA › Query Planning & Statistics (EXPLAIN ANALYZE) 🔍 Postgres Database Administration – Query Planning & Statistics (EXPLAIN ANALYZE) 20 questions · 15 min timer · Explanations included · Free 1. What is the primary purpose of using the EXPLAIN ANALYZE command in PostgreSQL? To generate a visual representation of the database schema. To execute a query and provide the execution plan with actual run times. To optimize the database by automatically creating indexes. To backup the database schema and data. None 1 out of 20 2. Which of the following scenarios might lead to a sequential scan being chosen over an index scan? The table is very small, and a sequential scan is more efficient. The table has a large number of indexes. The query involves a complex join operation. The table is frequently updated. None 2 out of 20 Loading questions... 3 out of 20 Loading questions... 4 out of 20 Loading questions... 5 out of 20 Loading questions... 6 out of 20 Loading questions... 7 out of 20 Loading questions... 8 out of 20 Loading questions... 9 out of 20 Loading questions... 10 out of 20 Loading questions... 11 out of 20 Loading questions... 12 out of 20 Loading questions... 13 out of 20 Loading questions... 14 out of 20 Loading questions... 15 out of 20 Loading questions... 16 out of 20 Loading questions... 17 out of 20 Loading questions... 18 out of 20 Loading questions... 19 out of 20 Loading questions... 20 out of 20 Click Submit to see your final score! Previous Start Quiz Next Time's upTime is Up!
