November 2006
Intermediate to advanced
168 pages
3h 17m
German
Content preview from MySQL: kurz & gut
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| IF |
IF Bedingung THEN Anweisungen [ELSEIF Bedingung THEN Anweisungen] ... [ELSE Anweisungen] END IF
IF implementiert eine einfache Bedingungsabfrage. Wenn Bedingung mit true ausgewertet wird, werden die auf THEN folgenden SQL-Anweisungen ausgeführt. Mit ELSEIF können weitere zu prüfende Bedingungen angegeben werden. Wenn keine der Bedingungen wahr ist, werden die auf ELSE folgenden Anweisungen ausgeführt. Auf THEN bzw. ELSE können eine oder mehrere SQL-Anweisungen folgen.
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