| Language Reference ||
Used to compare expressions.
result = expression1 comparisonoperator expression2
Comparison operators have these parts:
Part Description result Any variable. expression Any expression. comparisonoperator Any comparison operator. expression2 Any expression.
The following table contains a list of the comparison operators and the conditions that determine whether result is True, False, or Null:
Operator Description True if False if < Less than expression1 < expression2 expression1 >= expression2 <= Less than or equal to expression1 <= expression2 expression1 > expression2 > Greater than expression1 > expression2 expression1 <= expression2 >= Greater than or equal to expression1 >= expression2 expression1 < expression2 == Equal to expression1 == expression2 expression1 != expression2 != Not equal to expression1 != expression2 expression1 == expression2
When comparing two expressions, you may not be able to easily determine whether the expressions are being compared as numbers or as strings. The following table shows how expressions are compared or what results from the comparison, depending on the underlying subtype:
obj as ns num bool undef null obj F F F F F F F as F S S E E E F ns F S S N N E F num F E N N N E T bool F E N N N E T undef F E E E E E T null F F F T T T T
obj = Object, as = Alphanumeric String, ns = Numeric String, num = Number, bool = Boolean, undef = Undefined, null = Null value.
F = false, T = true, S = string, N = numeric, E = error.
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