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"""add_fk_cascade_constraints
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Revision ID: 8283acd4cbcc
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Revises: a2b3c4d5e6f7
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Create Date: 2026-03-29 13:55:46.488121
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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 = '8283acd4cbcc'
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down_revision: Union[str, Sequence[str], None] = 'a2b3c4d5e6f7'
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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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"""Upgrade schema."""
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op.drop_constraint(op.f('cards_user_id_fkey'), 'cards', type_='foreignkey')
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op.create_foreign_key(op.f('cards_user_id_fkey'), 'cards', 'users', ['user_id'], ['id'], ondelete='CASCADE')
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op.drop_constraint(op.f('deck_cards_card_id_fkey'), 'deck_cards', type_='foreignkey')
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op.drop_constraint(op.f('deck_cards_deck_id_fkey'), 'deck_cards', type_='foreignkey')
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op.create_foreign_key(op.f('deck_cards_deck_id_fkey'), 'deck_cards', 'decks', ['deck_id'], ['id'], ondelete='CASCADE')
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op.create_foreign_key(op.f('deck_cards_card_id_fkey'), 'deck_cards', 'cards', ['card_id'], ['id'], ondelete='CASCADE')
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op.drop_constraint(op.f('decks_user_id_fkey'), 'decks', type_='foreignkey')
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op.create_foreign_key(op.f('decks_user_id_fkey'), 'decks', 'users', ['user_id'], ['id'], ondelete='CASCADE')
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def downgrade() -> None:
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"""Downgrade schema."""
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op.drop_constraint(op.f('decks_user_id_fkey'), 'decks', type_='foreignkey')
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op.create_foreign_key(op.f('decks_user_id_fkey'), 'decks', 'users', ['user_id'], ['id'])
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op.drop_constraint(op.f('deck_cards_deck_id_fkey'), 'deck_cards', type_='foreignkey')
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op.drop_constraint(op.f('deck_cards_card_id_fkey'), 'deck_cards', type_='foreignkey')
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op.create_foreign_key(op.f('deck_cards_deck_id_fkey'), 'deck_cards', 'decks', ['deck_id'], ['id'])
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op.create_foreign_key(op.f('deck_cards_card_id_fkey'), 'deck_cards', 'cards', ['card_id'], ['id'])
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op.drop_constraint(op.f('cards_user_id_fkey'), 'cards', type_='foreignkey')
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op.create_foreign_key(op.f('cards_user_id_fkey'), 'cards', 'users', ['user_id'], ['id'])
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