Change syntax of unbound test

ldbc / gcore-spark

Implementation of the G-CORE graph query language on Spark

Apache License 2.0

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Closed peterboncz closed 5 years ago

peterboncz commented 6 years ago

support use of NULL as a constant symbol indicating an unbound property
introduce“e IS NULL” (like SQL) and remove exist(e) notation (affects both parser and translation)

ramhgarcias commented 5 years ago