====== 2.2 Poizvedbe s povezanimi tabelami ======

SQL poizvedbe na Gateway podatkih v Accessu.

===== Enostavna poizvedba =====

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

===== Povezava =====

<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>

===== Namig za zmogljivost =====

Filtri se posredujejo strežniku - velike količine podatkov se ne naložijo lokalno.

===== Agregacije =====

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