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How can you modify a DO block to catch and handle exceptions during execution?

hard📝 Application Q9 of 15
PostgreSQL - PL/pgSQL Fundamentals
How can you modify a DO block to catch and handle exceptions during execution?
AUse BEGIN ... EXCEPTION ... END block inside the DO block
BAdd TRY ... CATCH keywords around the code
CUse IF ... ELSE to check for errors
DExceptions cannot be handled in DO blocks
Step-by-Step Solution
Solution:
  1. Step 1: Recall exception handling in PL/pgSQL

    PL/pgSQL uses BEGIN ... EXCEPTION ... END to handle errors.
  2. Step 2: Eliminate invalid options

    TRY ... CATCH is not valid in PostgreSQL; IF ... ELSE is for conditions, not exceptions; exceptions can be handled.
  3. Final Answer:

    Use BEGIN ... EXCEPTION ... END block inside the DO block -> Option A
  4. Quick Check:

    Exception handling = BEGIN ... EXCEPTION ... END [OK]
Quick Trick: Use EXCEPTION block inside DO for error handling [OK]
Common Mistakes:
  • Using TRY ... CATCH syntax from other languages
  • Thinking exceptions cannot be caught
  • Using IF ... ELSE for exceptions

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