43 lines
1.3 KiB
Python
43 lines
1.3 KiB
Python
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"""add missing performance indexes
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Revision ID: c3d4e5f6a7b8
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Revises: b7c8d9e0f1a2
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Create Date: 2026-03-19 10:00:00.000000
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"""
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from typing import Sequence, Union
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from alembic import op
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import sqlalchemy as sa
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# revision identifiers, used by Alembic.
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revision: str = "c3d4e5f6a7b8"
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down_revision: Union[str, None] = "59807c4e84ee"
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branch_labels: Union[str, Sequence[str], None] = None
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depends_on: Union[str, Sequence[str], None] = None
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def upgrade() -> None:
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# Stock universe filtering (strategy engine uses market + market_cap frequently)
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op.create_index("idx_stocks_market", "stocks", ["market"])
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op.create_index(
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"idx_stocks_market_cap", "stocks", [sa.text("market_cap DESC NULLS LAST")]
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)
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# Backtest listing by user (always filtered by user_id + ordered by created_at)
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op.create_index(
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"idx_backtests_user_created",
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"backtests",
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["user_id", sa.text("created_at DESC")],
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)
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op.create_index("idx_backtests_status", "backtests", ["status"])
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def downgrade() -> None:
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op.drop_index("idx_backtests_status", table_name="backtests")
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op.drop_index("idx_backtests_user_created", table_name="backtests")
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op.drop_index("idx_stocks_market_cap", table_name="stocks")
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op.drop_index("idx_stocks_market", table_name="stocks")
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