code: def upgrade():
      with op.batch_alter_table("report_schedule") as batch_op:
          batch_op.add_column(
              sa.Column(
                  "timezone",
                  sa.String(length=100),
                  nullable=False,
                  server_default="UTC",
              )
          )
  
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