Why do many teams avoid SELECT * in production queries? Give practical reasons.

Problem Statement

Explanation

SELECT star pulls every column, even those you do not need. That increases I O, network transfer, and CPU, and can hide poor indexing because wider rows change access paths. Listing columns makes intent clear, stabilizes APIs, and reduces breakage when new columns are added. It also helps the optimizer when covering indexes can satisfy the query without touching the base table.

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SELECT id, name, status
FROM tickets
WHERE status='OPEN';

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SQL Core Fundamentals

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Why do many teams avoid SELECT * in production queries? Give practical reasons.

Problem Statement

Explanation

Code Solution

Practice Sets

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Master Interviews Anywhere, Anytime

Why do many teams avoid SELECT * in production queries? Give practical reasons.

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