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Why do SQL developers use DECLARE and SET statements to work with variables?

easy📝 Conceptual Q1 of 15
SQL - Stored Procedures and Functions
Why do SQL developers use DECLARE and SET statements to work with variables?
ATo permanently save data in database tables
BTo store temporary data values during query execution
CTo create indexes on columns
DTo define user permissions
Step-by-Step Solution
Solution:

  1. Step 1: Understand DECLARE

    This statement creates a variable in SQL to hold data temporarily.

  2. Step 2: Understand SET

    This assigns or updates the value of the declared variable.

  3. Final Answer:

    To store temporary data values during query execution -> Option B

  4. Quick Check:

    Variables hold temporary data, not permanent storage. [OK]
Quick Trick: Variables hold temporary values during execution [OK]
Common Mistakes:
  • Confusing variables with permanent table data
  • Thinking variables define database structure

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