SubQuery Properties | 
The SubQuery type exposes the following members.
| Name | Description | |
|---|---|---|
| FixedVariables | 
            Gets the enumeration of fixed variables in the algebra i.e. variables that are guaranteed to have a bound value.
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| FloatingVariables | 
            Gets the enumeration of floating variables in the algebra i.e. variables that are not guaranteed to have a bound value.
              | |
| Variables | 
            Gets the variables used in the subquery which are projected out of it.
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