code: def test_empty_other_schema():
      from sqlalchemy import (
          DDL,
          Column,
          Integer,
          MetaData,
          Table,
          create_engine,
          event,
      )
  
      # Database configurations.
      pg_host = "localhost"
      pg_port = "5432"
      pg_user = "user"
      pg_pass = "pass"
      pg_db = "db"
      db_url = f"postgresql://{pg_user}:{pg_pass}@{pg_host}:{pg_port}/{pg_db}"
  
      # Create an empty table in a different schema.
      table_name = "empty_table"
      schema_name = "other_schema"
      engine = create_engine(db_url)
      metadata = MetaData()
      table = Table(
          table_name,
          metadata,
          Column("id", Integer, primary_key=True),
          Column("col2", Integer),
          schema=schema_name,
      )
      # Create the schema and the table.
      event.listen(
          metadata,
          "before_create",
          DDL("CREATE SCHEMA IF NOT EXISTS %s" % schema_name),
      )
      metadata.create_all(engine)
  
      # Read the empty table from the other schema.
      dask_df = read_sql_table(
          table.name,
          db_url,
          index_col="id",
          schema=table.schema,
          npartitions=1,
      )
  
      # Validate that the retrieved table is empty.
      assert dask_df.index.name == "id"
      assert dask_df.col2.dtype == np.dtype("int64")
      pd_dataframe = dask_df.compute()
      assert pd_dataframe.empty is True
  
      # Drop the schema and the table.
      engine.execute("DROP SCHEMA IF EXISTS %s CASCADE" % schema_name)
  
imports: from __future__ import annotations
  import io
  import sys
  from contextlib import contextmanager
  import pytest
  from dask.dataframe.io.sql import read_sql, read_sql_query, read_sql_table
  from dask.dataframe.utils import assert_eq, get_string_dtype
  from dask.utils import tmpfile
label_desc: Use image node_id 5 for calling a global function with example usage: test_empty_other_schema() without return types