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You try to run ALTER VIEW sales_view AS SELECT * FROM sales WHERE amount > 1000; but get an error. What is the most likely cause?

medium📝 Debug Q14 of 15
SQL - Views
You try to run ALTER VIEW sales_view AS SELECT * FROM sales WHERE amount > 1000; but get an error. What is the most likely cause?
AThe view <code>sales_view</code> does not exist.
BThe SELECT query inside ALTER VIEW is missing a semicolon.
CYou cannot use WHERE clauses inside ALTER VIEW.
DALTER VIEW requires DROP VIEW before use.
Step-by-Step Solution
Solution:
  1. Step 1: Check ALTER VIEW prerequisites

    ALTER VIEW requires the view to already exist to modify it.
  2. Step 2: Identify common error cause

    If the view sales_view does not exist, ALTER VIEW will fail with an error.
  3. Final Answer:

    The view sales_view does not exist. -> Option A
  4. Quick Check:

    ALTER VIEW fails if view missing [OK]
Quick Trick: Ensure view exists before ALTER VIEW [OK]
Common Mistakes:
MISTAKES
  • Thinking WHERE clause is invalid in ALTER VIEW
  • Assuming semicolon inside ALTER VIEW causes error
  • Believing DROP VIEW is needed before ALTER VIEW

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