IF Statement
Syntax:IF condition THEN statements; [ELSIF condition THEN statements;] [ELSE statement;] END IF;Note the spelling is ElsIF not ElseIF which you might expect from other languages.
'condition' may include logical comparisons...
true AND true = true
true OR true = true
false AND false = false
false OR false = false
null AND null = null
null OR null = null
true AND false = false
true OR false = true
true AND null = null
true OR null = true
false AND null = false
false OR null = null
NOT TRUE = FALSE
NOT FALSE = TRUE
NOT NULL = NULL
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