airbnb/caravel

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#
#   http://www.apache.org/licenses/LICENSE-2.0
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"""change_table_unique_constraint

Revision ID: b4456560d4f3
Revises: bb51420eaf83
Create Date: 2016-04-15 08:31:26.249591

"""

from alembic import op

# revision identifiers, used by Alembic.
revision = "b4456560d4f3"
down_revision = "bb51420eaf83"


def upgrade():
    try:
        # Trying since sqlite doesn't like constraints
        op.drop_constraint("tables_table_name_key", "tables", type_="unique")
        op.create_unique_constraint(
            "_customer_location_uc", "tables", ["database_id", "schema", "table_name"]
        )
    except Exception:
        pass


def downgrade():
    try:
        # Trying since sqlite doesn't like constraints
        op.drop_constraint("_customer_location_uc", "tables", type_="unique")
    except Exception:
        pass