text: const createSupplierTable = `
  create table supplier (
  "supplier_id" serial primary key,
  "company_name" text,
  "company_logo" text,
  ctime timestamptz,
  mtime timestamptz default current_timestamp
  )
  `
  const dropSupplierTable = `
  drop table supplier;
  `
  
  exports.up = function(knex) {
  return knex.raw(createSupplierTable)
  };
  
  exports.down = function(knex) {
  return knex.raw(dropSupplierTable)
    
  };
         