[Solved] You created a view with:CREATE VIEW ActiveUsers AS SELECT id, name FROM Users WHERE active = 1;But... gives an error: ERROR: relation "activeusers" does not existWhat is the most likely cause? | SQL

SQL - Views

You created a view with:
CREATE VIEW ActiveUsers AS SELECT id, name FROM Users WHERE active = 1;
But running SELECT * FROM ActiveUsers; gives an error: ERROR: relation "activeusers" does not exist
What is the most likely cause?

AThe view was not created successfully or was dropped

BThe SELECT query inside the view has syntax errors

CThe Users table does not have an 'active' column

DYou must refresh the view before selecting from it

Step-by-Step Solution

Solution:

Step 1: Analyze the error message
The error says the relation (view) "activeusers" does not exist, meaning the view is missing.
Step 2: Consider causes for missing view
This usually means the view was never created or was dropped. Syntax errors or missing columns cause errors during creation, not this runtime error. Views do not require refreshing.
Final Answer:
The view was not created successfully or was dropped -> Option A
Quick Check:
Missing view = creation failed or dropped [OK]

Quick Trick: Check if view exists before querying it [OK]

Common Mistakes:

MISTAKES

Assuming syntax errors cause this runtime error
Thinking views need refreshing like materialized views
Ignoring case sensitivity or schema issues

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More SQL Quizzes

You created a view with:

Step 1: Analyze the error message

Step 2: Consider causes for missing view

Final Answer:

Quick Check:

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