Why is WITH (NOLOCK) risky on OLTP reads?

Problem Statement

Explanation

NOLOCK (read uncommitted) sacrifices correctness for speed. You can see rows twice, miss rows, or read values that roll back later. Use snapshot-based isolation for non-blocking reads while keeping logical consistency.

Code Solution

SolutionRead Only

SELECT * FROM orders WITH (NOLOCK); -- may be inconsistent

Practice Sets

This question appears in the following practice sets:

Transactions, Concurrency & Isolation

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Why is WITH (NOLOCK) risky on OLTP reads?

Problem Statement

Explanation

Code Solution

Practice Sets

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Master Interviews Anywhere, Anytime

Why is WITH (NOLOCK) risky on OLTP reads?

Problem Statement

Explanation

Code Solution

Practice Sets

Related Questions

Which SQL statement retrieves all columns and rows from a table named employees?

Which clause filters rows before aggregation and affects which rows are grouped?

What is the default sort order when ORDER BY is used without ASC or DESC?

Which construct is commonly used to paginate results in SQL engines like Postgres and MySQL?

Which predicate correctly checks for missing values in standard SQL?

More from SQL & Databases

Master Interviews
Anywhere, Anytime