Import concepts should not add existing concepts

OHDSI / Circe

[Under development] CIRCE is a cohort definition and syntax compiler tool for OMOP CDMv5

Apache License 2.0

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Import concepts should not add existing concepts #32

Closed chrisknoll closed 9 years ago

chrisknoll commented 9 years ago

When importing concepts, we should check the existing list for duplicates. Duplicates should not be added. Currently, we only check the imported list for duplicates, but if the concept was already in the existing concpet set, the concept ID is added again.