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detaching duckdb before attaching it #26

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Merged
hyi merged 1 commit into from
Nov 7, 2025
Merged

detaching duckdb before attaching it #26

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5 changes: 5 additions & 0 deletions biasanalyzer/database.py
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Original file line number Diff line number Diff line change
Expand Up @@ -56,6 +56,11 @@ def _initialize(self, db_url, omop_db_url=None):
ATTACH '{self.omop_cdm_db_url}' as {self.omop_alias} (TYPE postgres)
""")
elif omop_db_url.endswith(".duckdb"):
try:
self.conn.execute(f"DETACH DATABASE {self.omop_alias}")
except (duckdb.BinderException, duckdb.CatalogException):
# ignore if not attached yet
pass
self.conn.execute(f"""
ATTACH '{self.omop_cdm_db_url}' as {self.omop_alias}
""")
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