text: DROP TABLE IF EXISTS first_names;
  DROP TABLE IF EXISTS last_names;
  DROP TABLE IF EXISTS languages;
  DROP TABLE IF EXISTS street_names;
  DROP TABLE IF EXISTS cities;
  DROP TABLE IF EXISTS organization_names;
  
  CREATE TABLE first_names (
    sex text,
    first_name text
  );
  
  CREATE TABLE last_names (
    last_name text
  );
  
  CREATE TABLE languages (
    code text,
    name text
  );
  
  CREATE TABLE street_names (
    street_name text
  );
  
  CREATE TABLE cities (
    zip text,
    state text,
    city text,
    latitude float,
    longitude float
  );
  
  CREATE TABLE organization_names (
    organization_name text
  );
  
  -- COPY first_names (sex, first_name)
  --      FROM './perf/data/first_names.csv';
  -- COPY last_names (last_name)
  --      FROM './perf/data/last_names.csv';
  -- COPY languages (code, name)
  --      FROM './perf/data/language-codes-iso-639-1-alpha-2.csv'
  --      WITH csv;
  -- COPY street_names (street_name)
  --      FROM './perf/data/street_names.csv';
  -- COPY cities (zip, state, city, latitude, longitude)
  --      FROM './perf/data/cities.csv'
  --      WITH csv;
  -- COPY organization_names (organization_name)
  --      FROM './perf/data/organization_names.csv';
  
  \echo 'Create loading fake date function: "load_dummy_data(_directory_ TEXT)".'
  DROP FUNCTION IF EXISTS load_dummy_data(_directory_ TEXT) CASCADE;
  CREATE OR REPLACE FUNCTION load_dummy_data(_directory_ TEXT)
  RETURNS void AS $$
    BEGIN
      RAISE NOTICE 'Load fake "first_names".';
      EXECUTE 'COPY first_names (sex, first_name) FROM ''' || _directory_ || '/first_names.csv''';
  
      RAISE NOTICE 'Load fake "last_names".';
      EXECUTE 'COPY last_names (last_name) FROM ''' || _directory_ || '/last_names.csv''';
  
      RAISE NOTICE 'Load fake "languages".';
      EXECUTE 'COPY languages (code, name) FROM ''' || _directory_ || '/language-codes-iso-639-1-alpha-2.csv'' WITH csv';
  
      RAISE NOTICE 'Load fake "street_names".';
      EXECUTE 'COPY street_names (street_name) FROM ''' || _directory_ || '/street_names.csv''';
  
      RAISE NOTICE 'Load fake "cities".';
      EXECUTE 'COPY cities (zip, state, city, latitude, longitude) FROM ''' || _directory_ || '/cities.csv'' WITH csv';
  
      RAISE NOTICE 'Load fake "organization_names".';
      EXECUTE 'COPY organization_names (organization_name) FROM ''' || _directory_ || '/organization_names.csv''';
    END
  $$ LANGUAGE plpgsql;
  