fixed duplicate NDCs, updated script to hopefully prevent them in the…#104

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hoganwr merged 4 commits intomainfrom

resolve-duplicate-ndcs

Jan 10, 2026

Commits on Dec 31, 2025

fixed duplicate NDCs, updated script to hopefully prevent them in the future. Still need to add command to delete NDCs from ndc_clinical_drug that get inserted into ndc_branded_drug. Addresses #103
hoganwr
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Commits on Jan 4, 2026

Enhance SQL script with explanatory comments
hoganwr
authored

Commits on Jan 5, 2026

updated script based on testing on Jan 2026 version of RxNorm. Will run that update as a separate PR, so only checking in the correct script for doing the update in this PR.
hoganwr
committed

Commits on Jan 10, 2026

had some incorrect obsoletion replacements in obsolete.tsv involving NDCs. Don't expect a recurrence.
hoganwr
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