old_contents: const alasql = require('alasql');
  
  const stringConcat = function stringConcat(...stringToConcat) {
    let fullString = '';
    for (let index = 0; index < stringToConcat.length; index+=1) {
      fullString += stringToConcat[index];
    }
    return fullString;
  };
  
  const sqlCommands = function sqlCommands() {
    this.getFullTableData = function getFullTableData(tableName) {
      return alasql(stringConcat('SELECT * FROM ', tableName));
    };
  
    this.createTable = function createTable(sqlStatement) {
      alasql(sqlStatement);
    };
  };
  
new_contents: const alasql = require('alasql');
  
  const stringConcat = function stringConcat(...stringToConcat) {
    let fullString = '';
    for (let index = 0; index < stringToConcat.length; index+=1) {
      fullString += stringToConcat[index];
    }
    return fullString;
  };
  
  const sqlCommands = function sqlCommands() {
    this.getFullTableData = function getFullTableData(tableName) {
      return alasql(stringConcat('SELECT * FROM ', tableName));
    };
  
    this.createTable = function createTable(sqlStatement) {
      alasql(sqlStatement);
    };
  
    this.deleteTable = function deleteTable(tableName) {
      alasql(stringConcat('DROP TABLE ', tableName));
    };
  };
  
subject: Add deleteTable function into sqlCommands.js