| 123456789101112131415161718192021222324252627282930313233343536373839404142 | """add table dataset_permissionsRevision ID: 7e6a8693e07aRevises: 4ff534e1eb11Create Date: 2024-06-25 03:20:46.012193"""import sqlalchemy as safrom alembic import opimport models.types# revision identifiers, used by Alembic.revision = '7e6a8693e07a'down_revision = 'b2602e131636'branch_labels = Nonedepends_on = Nonedef upgrade():    # ### commands auto generated by Alembic - please adjust! ###    op.create_table('dataset_permissions',    sa.Column('id', models.types.StringUUID(), server_default=sa.text('uuid_generate_v4()'), nullable=False),    sa.Column('dataset_id', models.types.StringUUID(), nullable=False),    sa.Column('account_id', models.types.StringUUID(), nullable=False),    sa.Column('has_permission', sa.Boolean(), server_default=sa.text('true'), nullable=False),    sa.Column('created_at', sa.DateTime(), server_default=sa.text('CURRENT_TIMESTAMP(0)'), nullable=False),    sa.PrimaryKeyConstraint('id', name='dataset_permission_pkey')    )    with op.batch_alter_table('dataset_permissions', schema=None) as batch_op:        batch_op.create_index('idx_dataset_permissions_account_id', ['account_id'], unique=False)        batch_op.create_index('idx_dataset_permissions_dataset_id', ['dataset_id'], unique=False)    # ### end Alembic commands ###def downgrade():    # ### commands auto generated by Alembic - please adjust! ###    with op.batch_alter_table('dataset_permissions', schema=None) as batch_op:        batch_op.drop_index('idx_dataset_permissions_dataset_id')        batch_op.drop_index('idx_dataset_permissions_account_id')    op.drop_table('dataset_permissions')    # ### end Alembic commands ###
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