[Solved] Examine the following query:SELECT orders.id, customers.name FROM orders INNER JOIN customers ON orders.customer_id = customers.id WHERE orders.... | PostgreSQL

PostgreSQL - Joins in PostgreSQL

Examine the following query:

SELECT orders.id, customers.name FROM orders INNER JOIN customers ON orders.customer_id = customers.id WHERE orders.order_date > '2023-12-31'

What is the problem with this query?

AThere is no problem; the query is valid and will execute correctly.

BThe date format in the WHERE clause is invalid for PostgreSQL.

CThe INNER JOIN condition should use USING instead of ON.

DThe WHERE clause should be placed before the INNER JOIN.

Step-by-Step Solution

Solution:

Step 1: Check date format
'2023-12-31' is a valid ISO date format in PostgreSQL.
Step 2: Validate JOIN syntax
INNER JOIN with ON condition is correct.
Step 3: Confirm WHERE clause placement
WHERE clause correctly follows the JOIN.
Final Answer:
The query is valid and will execute correctly. -> Option A
Quick Check:
Date format and JOIN syntax are correct. [OK]

Quick Trick: Check date format and JOIN syntax carefully. [OK]

Common Mistakes:

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