SELECT
--DISTINCT
organizations.Name,users.FName, users.LName, UserTypes.Name, users.Email, Users.id,
(SELECT COUNT(MessageId)) As MsgsReceived,
(SELECT COUNT(MessageID)
WHERE Messages.Urgency = 1) AS LowMsgsReceived,
(SELECT COUNT(MessageID)
WHERE Messages.Urgency = 2) AS MedMsgsReceived,
(SELECT COUNT(MessageID)
WHERE Messages.Urgency = 3) AS HighMsgsReceived
FROM Users
INNER JOIN Recipients ON
Users.ID = Recipients.UserId
INNER JOIN Messages ON
Messages.ID = Recipients.MessageID
INNER JOIN UserTypes ON
Users.UserTypeID = UserTypes.ID
INNER JOIN Organizations ON
Users.OrganizationId = Organizations.Id
GROUP BY organizations.Name,users.FName, users.LName, UserTypes.Name, users.Email, Users.id, Messages.Urgency
ORDER BY Users.FName
計數給我錯誤的接收到的消息級別的結果。下面的查詢給我正確的計數,但我不想顯示null的一些行,顯示0,而不是任何幫助?針對別名行的動態查詢
你是什麼意思的「如何子表綁定父表」嗎?孩子是哪張桌子?父母是哪張桌子?在什麼情況下你需要他們綁定? – pete