How Data is Stored and Moved

Query

A question you ask a database, written in a structured language like SQL.

Definition

A question you ask a database, written in a structured language like SQL. A query can retrieve data, filter it, sort it, combine it from multiple tables, or calculate summaries.

Example

SELECT name, grade FROM students WHERE grade > 90 — this query asks the database to return the names and grades of all students with a grade above 90.

See it in context Learn how Query fits into the bigger picture of how software actually works.

Read the Guide →