[Solved] How can you combine a cursor with transaction control to ensure all row updates succeed or none do? — Ans: Begin a transaction before opening cursor, commit after loop, rollback on error | SQL

SQL - Stored Procedures and Functions

How can you combine a cursor with transaction control to ensure all row updates succeed or none do?

ABegin a transaction before opening cursor, commit after loop, rollback on error

BOpen cursor inside a transaction but commit after each row update

CUse cursor without transaction; rely on auto-commit

DDeclare cursor inside a transaction but never commit or rollback

Step-by-Step Solution

Solution:

Step 1: Understand transaction scope with cursor
Transaction should start before cursor operations to cover all updates.
Step 2: Commit or rollback after processing all rows
Commit after successful loop; rollback if any error occurs to keep data consistent.
Final Answer:
Begin a transaction before opening cursor, commit after loop, rollback on error -> Option A
Quick Check:
Transaction wraps entire cursor operation [OK]

Quick Trick: Wrap cursor loop in transaction for all-or-nothing updates [OK]

Common Mistakes:

Master "Stored Procedures and Functions" in SQL

9 interactive learning modes - each teaches the same concept differently

More SQL Quizzes

How can you combine a cursor with transaction control to ensure all row updates succeed or none do?