8.2.16 Or Operator

Used to perform a logical disjunction on two expressions.
Syntax
result = expression1 Or expression2
Arguments
- result
- Any numeric variable.
- expression1
- Any expression.
- expression2
- Any expression.
Remarks
If either or both expressions evaluate to True, result is True. The following table illustrates how result is determined:
If expression1 is
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And expression2 is
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Then result is
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True
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True
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True
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True
|
False
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True
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True
|
Null
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True
|
False
|
True
|
True
|
False
|
False
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False
|
False
|
Null
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Null
|
Null
|
True
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True
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Null
|
False
|
Null
|
Null
|
Null
|
Null
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The Or operator also performs a bitwise comparison of identically positioned bits in two numeric expressions and sets the corresponding bit in result according to the following table:
If bit in expression1 is
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And bit in expression2 is
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Then result is
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0
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0
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0
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0
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1
|
1
|
1
|
0
|
1
|
1
|
1
|
1
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