Solution:Step 1: Understand what EXPLAIN ANALYZE outputsIt runs the query and shows actual rows processed and timing for each plan step.Step 2: Check the query validityThe date format is valid in PostgreSQL, so no error occurs.Final Answer:It shows actual rows processed and time taken for each step

[Solved] Given the query:EXPLAIN ANALYZE SELECT * FROM orders WHERE order_date > '2023-01-01';Which of the following is true about the output? | PostgreSQL

PostgreSQL - Set Operations and Advanced Queries

Given the query:
EXPLAIN ANALYZE SELECT * FROM orders WHERE order_date > '2023-01-01';
Which of the following is true about the output?

AIt shows actual rows processed and time taken for each step

BIt shows the estimated rows but no actual execution time

CIt only shows the query text without any plan

DIt returns an error because of the date format

Step-by-Step Solution

Solution:

Step 1: Understand what EXPLAIN ANALYZE outputs
It runs the query and shows actual rows processed and timing for each plan step.
Step 2: Check the query validity
The date format is valid in PostgreSQL, so no error occurs.
Final Answer:
It shows actual rows processed and time taken for each step -> Option A
Quick Check:
EXPLAIN ANALYZE output = actual rows and timing [OK]

Quick Trick: EXPLAIN ANALYZE shows real rows and timing [OK]

Common Mistakes:

Thinking it only shows estimates
Assuming date format causes error
Expecting no plan output

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Given the query:

Step 1: Understand what EXPLAIN ANALYZE outputs

Step 2: Check the query validity

Final Answer:

Quick Check:

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