SQL - INNER JOIN
Which of the following is the correct syntax for an INNER JOIN between tables
Employees and Departments on the column DeptID using the ON clause?Which of the following is the correct syntax for an INNER JOIN between tables Employees and Departments on the column DeptID using the ON clause?
easy📝 Syntax Q12 of 15
Step-by-Step Solution
Solution:
Step 1: Review INNER JOIN syntax
The correct syntax uses INNER JOIN with ON and a single equals sign (=) for comparison.Step 2: Check each option
SELECT * FROM Employees INNER JOIN Departments ON Employees.DeptID = Departments.DeptID; uses correct INNER JOIN syntax with ON and =. SELECT * FROM Employees JOIN Departments WHERE Employees.DeptID = Departments.DeptID; uses WHERE instead of ON. SELECT * FROM Employees INNER JOIN Departments USING DeptID; uses USING instead of ON. SELECT * FROM Employees INNER JOIN Departments ON Employees.DeptID == Departments.DeptID; uses double equals (==), which is not valid in SQL.Final Answer:
SELECT * FROM Employees INNER JOIN Departments ON Employees.DeptID = Departments.DeptID; -> Option DQuick Check:
INNER JOIN syntax = ON with single = [OK]
Quick Trick: Use ON with single = for INNER JOIN conditions [OK]
Common Mistakes:
MISTAKES- Using WHERE instead of ON for join condition
- Using double equals (==) instead of single equals (=)
- Using USING instead of ON
Master "INNER JOIN" in SQL
Want More Practice?
15+ quiz questions · All difficulty levels · Free
Free Signup - Practice All QuestionsMore SQL Quizzes