"""Artist Associations

Revision ID: c0ab67f3a6f4
Revises: 1d327491a903
Create Date: 2018-02-21 14:37:46.621860

"""

# revision identifiers, used by Alembic.
revision = 'c0ab67f3a6f4'
down_revision = '1d327491a903'
branch_labels = None
depends_on = None

from alembic import op
import sqlalchemy as sa


def upgrade():
    ### commands auto generated by Alembic - please adjust! ###
    op.create_table('artists',
    sa.Column('arid', sa.BigInteger(), nullable=False),
    sa.PrimaryKeyConstraint('arid')
    )
    op.create_table('artist_associations',
    sa.Column('arid', sa.BigInteger(), autoincrement=False, nullable=False),
    sa.Column('source', sa.String(), nullable=False),
    sa.Column('identifier', sa.String(), nullable=False),
    sa.ForeignKeyConstraint(['arid'], ['artists.arid'], ),
    sa.PrimaryKeyConstraint('source', 'identifier')
    )
    ### end Alembic commands ###


def downgrade():
    ### commands auto generated by Alembic - please adjust! ###
    op.drop_table('artist_associations')
    op.drop_table('artists')
    ### end Alembic commands ###