29 lines
713 B
Python
29 lines
713 B
Python
 
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"""index messages(user_id, message_id_hdr)
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Speeds the per-user Message-ID lookups used by JWZ threading (§7.2 candidate
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set) and by the duplicate-Message-ID resolution in the indexer (§7.1).
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Revision ID: 0002
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Revises: 0001
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Create Date: 2026-07-17
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"""
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from __future__ import annotations
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from collections.abc import Sequence
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from alembic import op
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revision: str = "0002"
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down_revision: str | None = "0001"
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branch_labels: str | Sequence[str] | None = None
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depends_on: str | Sequence[str] | None = None
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def upgrade() -> None:
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op.execute("CREATE INDEX ix_messages_user_msgid ON messages (user_id, message_id_hdr)")
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def downgrade() -> None:
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op.execute("DROP INDEX IF EXISTS ix_messages_user_msgid")
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