[Solved] You wrote this SQL to create a view:CREATE VIEW UserEmails AS SELECT user_id, email FROM Users;Later, you try to update the Users table's email column but get an error when using the view. Why? | SQL

SQL - Views

You wrote this SQL to create a view:

CREATE VIEW UserEmails AS SELECT user_id, email FROM Users;

Later, you try to update the Users table's email column but get an error when using the view. Why?

AThe view does not include the primary key

BViews are read-only by default and may not allow updates

CYou cannot update columns named email

DThe view must be dropped before updating the table

Step-by-Step Solution

Solution:

Step 1: Understand view update limitations
Many views are read-only and do not allow direct updates to underlying tables.
Step 2: Check the view definition
This view selects user_id and email, but updates through views depend on database rules.
Final Answer:
Views are read-only by default and may not allow updates -> Option B
Quick Check:
Views often read-only = update errors [OK]

Quick Trick: Views often block updates unless explicitly allowed [OK]

Common Mistakes:

MISTAKES

Thinking views always allow updates
Believing primary key absence causes update error
Assuming column names restrict updates

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More SQL Quizzes

You wrote this SQL to create a view:

Step 1: Understand view update limitations

Step 2: Check the view definition

Final Answer:

Quick Check:

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