SQL - Query (SELECT)

Data System Architecture


A query is a SQL statement that begins with the SELECT word.

A stored query is called a view.

The result of a query is stored in a result table, called the result-set.

A query is itself a Relations




Ad-hoc queries are query used to explore a data set and are therefore never known in advance.


Reporting query are well-known query used to build metrics. See Data Analysis - Reporting Query

To relational algebra

Documentation / Reference

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