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fix(ob_conn): avoid reusing SQLAlchemy Column objects in DDL (#12588)

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### What problem does this PR solve?

When there are multiple users, parsing a document for a new user can
trigger the reuse of column objects, leading to the error
`sqlalchemy.exc.ArgumentError: Column object 'id' already assigned to
Table xxx`.

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)
This commit is contained in:
He Wang
2026-01-13 17:39:20 +08:00
committed by GitHub
parent ffedb2c6d3
commit 360114ed42
1 changed files with 2 additions and 2 deletions
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4
rag/utils/ob_conn.py
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@ -658,7 +658,7 @@ class OBConnection(DocStoreConnection):
self.client.create_table( self.client.create_table(
table_name=table_name, table_name=table_name,
columns=column_definitions, columns=[c.copy() for c in column_definitions],
**table_options, **table_options,
) )
logger.info(f"Created table '{table_name}'.") logger.info(f"Created table '{table_name}'.")
@ -711,7 +711,7 @@ class OBConnection(DocStoreConnection):
try: try:
self.client.add_columns( self.client.add_columns(
table_name=table_name, table_name=table_name,
columns=[column], columns=[column.copy()],
) )
logger.info(f"Added column '{column.name}' to table '{table_name}'.") logger.info(f"Added column '{column.name}' to table '{table_name}'.")
except Exception as e: except Exception as e: