集計関数
COUNT
クエリ条件に一致する行の数を返します。
SELECT COUNT(*) FROM CampaignPerformance WHERE Device = 'Mobile devices with full browsers'
COUNT
クエリ条件に一致する行の数を返します。
SELECT COUNT(AnnualRevenue) FROM CampaignPerformance WHERE Device = 'Mobile devices with full browsers'
COUNT(DISTINCT)
クエリ条件に一致する、null 以外の個別のフィールド値の数を返します。
SELECT COUNT(DISTINCT Clicks) AS DistinctValues FROM CampaignPerformance WHERE Device = 'Mobile devices with full browsers'
AVG
カラムの値の平均を返します。
SELECT Device, AVG(AnnualRevenue) FROM CampaignPerformance WHERE Device = 'Mobile devices with full browsers' GROUP BY Device
MIN
カラムの値の最小値を返します。
SELECT MIN(AnnualRevenue), Device FROM CampaignPerformance WHERE Device = 'Mobile devices with full browsers' GROUP BY Device
MAX
カラムの値の最大値を返します。
SELECT Device, MAX(AnnualRevenue) FROM CampaignPerformance WHERE Device = 'Mobile devices with full browsers' GROUP BY Device
SUM
カラムの値の合計を返します。
SELECT SUM(AnnualRevenue) FROM CampaignPerformance WHERE Device = 'Mobile devices with full browsers'