text: --Tables with distributed randomly and distributed columns
  
      CREATE TABLE mdt_table_distributed_by (
      col_with_default numeric DEFAULT 0,
      col_with_default_drop_default character varying(30) DEFAULT 'test1',
      col_with_constraint numeric UNIQUE
      ) DISTRIBUTED BY (col_with_constraint);
  
      CREATE TABLE mdt_table_distributed_randomly (
      text_col text,
      bigint_col bigint,
      char_vary_col character varying(30),
      numeric_col numeric
      ) DISTRIBUTED RANDOMLY;
  
  drop table mdt_table_distributed_by;
  drop table mdt_table_distributed_randomly;
  
  