May 2011
Intermediate to advanced
800 pages
39h 19m
German
Content preview from Microsoft Access Programmierrezepte
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Anhang C. Liste der wichtigsten SQL-Befehle
Anweisung | Erläuterung |
|---|---|
SELECT ... FROM ... | Selektiert Felder aus den anschließend mit FROM benannten Tabellen |
DISTINCT, DISTINCTROW | Verhindert doppelte bzw. identische Datensätze |
WHERE | Legt die Bedingung(en) fest, welche die selektierten Felder erfüllen müssen |
LIKE | Bedingung für den Vergleich von Zeichenketten |
AS | Gibt einen Alias-Namen an |
AND, OR, NOT | Logische Operationen beim Vergleich von Bedingungen |
IN | Test auf Mengenzugehörigkeit |
ORDER BY, GROUP BY | Legt Sortierfolge fest |
ASC, DESC | Legt eine auf- oder absteigende Sortierreihenfolge fest |
HAVING | Gibt die Bedingung für die zuvor gruppierten Einträge an |
LEFT JOIN, RIGHT JOIN, INNER JOIN, OUTER JOIN | Verknüpft zwei Tabellen über Fremd- und Primärschlüsselfeld nach verschiedenen ... |
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.