Migration sequence: add nullable → backfill via user_id/ai_session chain
→ verify zero NULLs → SET NOT NULL → CREATE INDEX.
Tables: sessions, attachments, session_supporting_data,
session_resolution_outputs
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
32 lines
1.6 KiB
Python
32 lines
1.6 KiB
Python
import uuid
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from datetime import datetime, timezone
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from typing import Optional
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from sqlalchemy import DateTime, Enum, ForeignKey, Integer, String, Text
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from sqlalchemy.dialects.postgresql import UUID
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from sqlalchemy.orm import Mapped, mapped_column, relationship
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from app.core.database import Base
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class SessionSupportingData(Base):
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__tablename__ = "session_supporting_data"
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id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
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session_id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), ForeignKey("sessions.id", ondelete="CASCADE"), nullable=False, index=True)
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account_id: Mapped[uuid.UUID] = mapped_column(
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UUID(as_uuid=True),
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ForeignKey("accounts.id", ondelete="CASCADE"),
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nullable=False,
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index=True,
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)
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label: Mapped[str] = mapped_column(String(255), nullable=False)
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data_type: Mapped[str] = mapped_column(Enum("text_snippet", "screenshot", name="supporting_data_type"), nullable=False)
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content: Mapped[str] = mapped_column(Text, nullable=False)
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content_type: Mapped[Optional[str]] = mapped_column(String(50), nullable=True)
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sort_order: Mapped[int] = mapped_column(Integer, nullable=False, default=0)
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created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=lambda: datetime.now(timezone.utc), nullable=False)
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updated_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=lambda: datetime.now(timezone.utc), onupdate=lambda: datetime.now(timezone.utc), nullable=False)
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session = relationship("Session", back_populates="supporting_data")
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