| CqlQueryExtensionsFirst Method | 
| Name | Description | |
|---|---|---|
| FirstTSource(CqlQueryTSource) | 
            Returns a CqlQuery which after execution will return the first element in a sequence.
            To execute this CqlQuery use Execute() method.
              | |
| FirstTSource(TableTSource, ExpressionFuncTSource, Boolean) | 
            Returns a CqlQuery which after execution returns the first element in a sequence that satisfies a specified condition.
            To execute this CqlQuery use Execute() method.
              |