Outdated table statistics usually cause which symptom?

Problem Statement

Explanation

Statistics inform the optimizer about value distributions. If they are stale, row estimates drift and the plan can degrade. Refreshing stats helps the optimizer choose the right indexes and join strategies for current data.

Code Solution

SolutionRead Only

-- engine specific
-- PostgreSQL autovacuum/analyze or: ANALYZE orders;
-- SQL Server: UPDATE STATISTICS orders;

Practice Sets

This question appears in the following practice sets:

Indexes & Query Performance Essentials

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Outdated table statistics usually cause which symptom?

Problem Statement

Explanation

Code Solution

Practice Sets

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

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More from SQL & Databases

Master Interviews Anywhere, Anytime

Outdated table statistics usually cause which symptom?

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