[Solved] Identify the error in this query that aims to preserve all rows from Employees while joining Departments:SELECT Employees.name, Departments.name FROM Employees LEFT JOIN Departments WHERE Employees.... | SQL

SQL - LEFT and RIGHT JOIN

Identify the error in this query that aims to preserve all rows from Employees while joining Departments:

SELECT Employees.name, Departments.name FROM Employees LEFT JOIN Departments WHERE Employees.dept_id = Departments.id;

AUsing WHERE instead of ON causes syntax error

BLEFT JOIN should be INNER JOIN

CMissing ON clause before WHERE

DNo error, query is correct

Step-by-Step Solution

Solution:

Step 1: Check JOIN syntax
LEFT JOIN requires ON clause to specify join condition, not WHERE.
Step 2: Identify error
Query uses WHERE instead of ON, so join condition is missing and syntax is invalid.
Final Answer:
Missing ON clause before WHERE -> Option C
Quick Check:
LEFT JOIN needs ON clause, not WHERE for join condition [OK]

Quick Trick: Use ON for join condition, WHERE filters after join [OK]

Common Mistakes:

MISTAKES

Placing join condition in WHERE instead of ON
Confusing WHERE and ON clauses
Assuming WHERE works as join condition

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More SQL Quizzes

Identify the error in this query that aims to preserve all rows from Employees while joining Departments:

Step 1: Check JOIN syntax

Step 2: Identify error

Final Answer:

Quick Check:

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