23 lines
834 B
Python
23 lines
834 B
Python
 
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"""users: логин уникален без учёта регистра
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Revision ID: 0008
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Revises: 0007
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"""
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from alembic import op
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import sqlalchemy as sa
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revision = "0008"
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down_revision = "0007"
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branch_labels = None
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depends_on = None
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def upgrade() -> None:
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dup = op.get_bind().execute(sa.text("SELECT lower(username), array_agg(username) FROM users GROUP BY 1 HAVING count(*) > 1")).all()
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if dup:
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raise RuntimeError(f"Логины, совпадающие без учёта регистра: {[(r[0], r[1]) for r in dup]}. Переименуйте или удалите дубли и повторите миграцию")
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op.create_index("uq_users_lower_username", "users", [sa.text("lower(username)")], unique=True)
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def downgrade() -> None:
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op.drop_index("uq_users_lower_username", table_name="users")
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