code: def upgrade():
      """Adds owner_display_name column to log"""
      with op.batch_alter_table(TABLE_NAME) as batch_op:
          batch_op.add_column(
              sa.Column("owner_display_name", sa.String(500))
          )
  
imports: import sqlalchemy
  from alembic import op
label_desc: Use image node_id 1 for calling a global function with example usage: upgrade() without return types