$columns = [
                    'addToCart', 'addToCartClicks', 'addToCartRate', 'adGroupId', 'adGroupName', 'addToList', 'addToListFromClicks',
                    'qualifiedBorrows', 'qualifiedBorrowsFromClicks', 'royaltyQualifiedBorrows', 'royaltyQualifiedBorrowsFromClicks',
                    'brandedSearches', 'brandedSearchesClicks', 'campaignBudgetAmount', 'campaignBudgetCurrencyCode', 'campaignBudgetType',
                    'campaignId', 'campaignName', 'campaignStatus', 'clicks', 'cost', 'costType', 'date', 'detailPageViews',
                    'detailPageViewsClicks', 'eCPAddToCart', 'impressions', 'keywordBid', 'keywordId', 'adKeywordStatus',
                    'keywordText', 'keywordType', 'matchType', 'newToBrandDetailPageViewRate', 'newToBrandDetailPageViews',
                    'newToBrandDetailPageViewsClicks', 'newToBrandECPDetailPageView', 'newToBrandPurchases', 'newToBrandPurchasesClicks',
                    'newToBrandPurchasesPercentage', 'newToBrandPurchasesRate', 'newToBrandSales', 'newToBrandSalesClicks',
                    'newToBrandSalesPercentage', 'newToBrandUnitsSold', 'newToBrandUnitsSoldClicks', 'newToBrandUnitsSoldPercentage',
                    'purchases', 'purchasesClicks', 'purchasesPromoted', 'sales', 'salesClicks', 'salesPromoted',
                    'targetingExpression', 'targetingId', 'targetingText', 'targetingType', 'topOfSearchImpressionShare', 'unitsSold',
                ];
