範例群組聊天資料庫查詢
上次修改主題的時間: 2011-01-27
本節包含Group Chat資料庫的範例查詢。
請使用下列範例來取得特定日期之後最活躍的聊天室清單。
SELECT nodeName as ChatRoom, COUNT(*) as ChatMessages
FROM tblChat, tblNode
WHERE channelId = nodeID AND dbo.fnTicksToDate(chatDate) > '1/1/2011'
GROUP BY nodeName
ORDER BY ChatMessages DESC
請使用下列範例來取得特定日期之後最活躍的使用者清單。
SELECT prinName as Name, count(*) as ChatMessages
FROM tblChat, tblPrincipal
WHERE prinId = userId AND dbo.fnTicksToDate(chatDate) > '1/1/2011'
GROUP BY prinName
ORDER BY ChatMessages DESC
請使用下列範例來取得曾傳送內含 “Hello World” 之訊息的所有人清單。
SELECT nodeName as ChatRoom, prinName as Name, content as Message
FROM tblChat, tblNode, tblPrincipal
WHERE channelId = nodeID AND userId = prinID AND content like '%Hello World%'
請使用下列範例來取得特定主體的群組成員資格清單。
SELECT prinName as Name
FROM tblPrincipalAffiliations as pa, tblPrincipal
where principalID = 7 and affiliationID = prinID
請使用下列範例來取得使用者 Jane Dow 為直接成員的每個聊天室清單。
SELECT DISTINCT nodeName as ChatRoom, prinName as Name
FROM tblPrincipalRole, tblPrincipal, tblNode
WHERE prinRoleNodeID = nodeID AND prinRolePrinID = prinID AND prinName = 'Jane Dow'
請使用下列範例來取得使用者已收到的邀請清單。
SELECT prinName
,nodeName
,invID
,createdOn
FROM tblPrincipalInvites as inv, tblPrincipal as p, tblNode as n
where inv.prinID = 5 AND inv.prinID = p.prinID and inv.nodeID = n.nodeID
ORDER BY invID DESC