message: Update 937d04c16b64_update_datasources.py
diff: @@ -36,8 +36,8 @@ def upgrade():
  with op.batch_alter_table('datasources') as batch_op:
  batch_op.alter_column(
  'datasource_name',
  + existing_type=sa.String(255),
  nullable=False,
  - type_=sa.String(255),
  )
  @@ -47,6 +47,6 @@ def downgrade():
  with op.batch_alter_table('datasources') as batch_op:
  batch_op.alter_column(
  'datasource_name',
  + existing_type=sa.String(255),
  nullable=True,
  - type_=sa.String(255),
  )
  