"""add_unique_constraint_to_gras_project_campaign

Revision ID: 49ad135937fb
Revises: 5420dd1e78e4
Create Date: 2020-12-21 11:12:18.307556

"""
from alembic import op
import sqlalchemy as sa


# revision identifiers, used by Alembic.
revision = '49ad135937fb'
down_revision = '5420dd1e78e4'
branch_labels = None
depends_on = None


def upgrade():
    op.create_unique_constraint('uq_GRASProjectCampaign_gras_project_id_campaign_id', 'GRASProjectCampaign', ['gras_project_id', 'campaign_id'])


def downgrade():
    op.drop_constraint('uq_GRASProjectCampaign_gras_project_id_campaign_id', 'GRASProjectCampaign', type_='unique')