November 2006
Intermediate to advanced
168 pages
3h 17m
German
Content preview from MySQL: kurz & gut
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1.7. Operatoren
MySQL stellt arithmetische, vergleichende und logische Operatoren sowie die beiden Zeichensatzoperatoren BINARY und COLLATE zur Verfügung.
1.7.1. Präzedenz-Regeln
Wenn Ihr SQL komplexe Ausdrücke enthält, werden die Unterausdrücke anhand der Präzedenz-Regeln von MySQL ausgewertet. Die Präzedenz-Regeln können natürlich immer dadurch umgangen werden, dass Sie einen Unterausdruck in Klammern setzen.
BINARY, COLLATE
NOT
^
- (unäres Minus)
* / %
+ −
<< >>
&
|
< <= > >= = <=> <> IN IS LIKE REGEXP
BETWEEN CASE
AND
OR XOR
1.7.2. Arithmetische Operatoren
Arithmetische Operatoren führen einfache Rechenoperationen auf zwei Werten durch:
+
Addiert zwei Zahlenwerte.
−
Subtrahiert zwei Zahlenwerte.
*
Multipliziert zwei Zahlenwerte.
/
Dividiert zwei ...
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