code: def upgrade():
      with op.batch_alter_table(
          "jobs_history", schema=None
      ) as batch_op:
          batch_op.add_column(
              sa.Column("query_str", sa.String(), nullable=True)
          )
          batch_op.add_column(
              sa.Column(
                  "updated_at",
                  sa.DateTime(),
                  nullable=True,
                  server_default=sa.func.current_timestamp(),
              )
          )
  
imports: from alembic import op
  import sqlalchemy
  import mindsdb.interfaces.storage.db
label_desc: Use image node_id 1 for calling a global function with example usage: upgrade() without return types