Robustness when relation name is null

HPI-Information-Systems / Metanome

The source repository of the Metanome tool

metanome.de

Apache License 2.0

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Robustness when relation name is null #364

Closed sekruse closed 7 years ago

sekruse commented 7 years ago

This PR addresses #363. It provides a default relation name, when ResultIterator could not infer one. Also, it allows for missing relation names in ColumnIdentifier's compareTo(...) method, which is required by ColumnCombinations.