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What does "query" mean in programming?
query is one of the most common terms in software development. This guide explains what it means, how it is used in practice, and why it matters, with real examples from the developer world.
Definition
A request for data from a database, usually written in SQL. A query specifies what data you want to retrieve, filter, or aggregate.
Example
"Optimize the slow query by adding an index on the email column."
Word forms
| Form | Type | Meaning | Example |
|---|---|---|---|
| query | noun | A request for data from a database | "That query takes two seconds to run on the production database." |
| query | verb (infinitive) | To request data from a database | "Query the users table to find accounts created this week." |
| queried | past tense | Already requested from the database | "We queried the database and got 10,000 results." |
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