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- from sqlalchemy.ext.declarative import declarative_base
- from sqlalchemy import event
- from sqlalchemy import DDL
- Base = declarative_base()
- # 启用pgvector扩展
- event.listens_for(Base.metadata, 'before_create')
- def enable_vector_extension(target, connection, **kw):
- connection.execute(DDL('CREATE EXTENSION IF NOT EXISTS vector'))
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