====== 2.2 Upiti s povezanim tablicama ======

SQL upiti na Gateway podacima u Accessu.

===== Jednostavni upit =====

<code sql>
SELECT * FROM Customers
WHERE Country = 'Germany'
ORDER BY Name;
</code>

===== Spajanje =====

<code sql>
SELECT c.Name, o.OrderDate, o.Total
FROM Customers AS c
INNER JOIN Orders AS o ON c.Id = o.CustomerId
WHERE o.OrderDate > #2024-01-01#;
</code>

===== Savjet za performanse =====

Filteri se prosljeđuju na server - velike količine podataka se ne učitavaju lokalno.

===== Agregacije =====

<code sql>
SELECT Country, COUNT(*) AS Broj
FROM Customers
GROUP BY Country;
</code>