これを試して:
SELECT
eventMatch.userID,
SUM(eventMatch.eventTypeID = 1) As TypeOne,
SUM(eventMatch.eventTypeID = 2) As TypeTwo,
COUNT( * )
FROM `eventMatch`
INNER JOIN activity ON eventMatch.activityID = activity.activityID
INNER JOIN activityMatch ON activity.activityID = activityMatch.activityID
WHERE activity.khID =1
GROUP BY userID
ORDER BY userID ASC;
更新 1
複数のイベント タイプの場合、次のように動的に実行できます。
SET @sql = NULL;
SELECT
GROUP_CONCAT(DISTINCT CONCAT('SUM(IF(em.eventTypeID = ''',
em.eventTypeID, ''', 1, 0)) AS Type',
em.eventTypeID )
) INTO @sql
FROM `eventMatch` AS em;
SET @sql = CONCAT('SELECT em.userID, ', @sql,
', COUNT( * )
FROM `eventMatch` AS em
INNER JOIN activity AS a ON em.activityID = a.activityID
INNER JOIN activityMatch AS am ON a.activityID = am.activityID
GROUP BY em.userID
ORDER BY em.userID ASC ;');
prepare stmt
FROM @sql;
execute stmt;
更新 2
テーブルからすべてのタイプを含めたい場合はEventTypes
、このタイプが他のテーブルに一致しない場合でも、テーブルからタイプを取得するのではなく、最初のステップでこのテーブルからタイプのリストを動的にEventTypes
取得してからeventmatch
動的に実行する必要があります以前と同じ方法でクエリを実行します。このような:
SET @sql = NULL;
SELECT
GROUP_CONCAT(DISTINCT CONCAT('SUM(IF(em.eventTypeID = ''',
em.eventTypeID, ''', 1, 0)) AS Type',
em.eventTypeID )
) INTO @sql
FROM eventTypes AS em; -- <---------- this is what I changed.
SET @sql = CONCAT('SELECT em.userID, ', @sql,
', COUNT( * )
FROM `eventMatch` AS em
INNER JOIN activity AS a ON em.activityID = a.activityID
INNER JOIN activityMatch AS am ON a.activityID = am.activityID
GROUP BY em.userID
ORDER BY em.userID ASC ;');
prepare stmt
FROM @sql;
execute stmt;