56c7da5817
* migrations: add if statements for some queries * add better checks to upgrade posts v6 migration * use "is null" instead of "= null" * fix down script for users v6 * reflect review comments
68 строки
2.2 KiB
SQL
68 строки
2.2 KiB
SQL
DO $$
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<<migrate_root_mention_count>>
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DECLARE
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mention_count_root_exist boolean := false;
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DECLARE
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msg_count_root_exist boolean := false;
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DECLARE
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tmp_count_root integer := 0;
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BEGIN
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SELECT count(*) != 0 INTO msg_count_root_exist
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FROM information_schema.columns
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WHERE table_name = 'channels'
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AND column_name = 'totalmsgcountroot';
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SELECT count(*) != 0 INTO mention_count_root_exist
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FROM information_schema.columns
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WHERE table_name = 'channelmembers'
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AND column_name = 'mentioncountroot';
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IF mention_count_root_exist THEN
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tmp_count_root := (SELECT count(*) FROM channelmembers WHERE msgcountroot IS NULL OR mentioncountroot IS NULL);
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END IF;
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ALTER TABLE channelmembers ADD COLUMN IF NOT EXISTS mentioncountroot bigint;
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IF (tmp_count_root > 0) THEN
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WITH q AS (
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SELECT ChannelId, COALESCE(SUM(UnreadMentions), 0) AS UnreadMentions, UserId
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FROM ThreadMemberships
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LEFT JOIN Threads ON ThreadMemberships.PostId = Threads.PostId
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GROUP BY Threads.ChannelId, ThreadMemberships.UserId
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)
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UPDATE channelmembers
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SET MentionCountRoot = ChannelMembers.MentionCount - q.UnreadMentions
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FROM q
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WHERE
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q.ChannelId = ChannelMembers.ChannelId AND
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q.UserId = ChannelMembers.UserId AND
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ChannelMembers.MentionCount > 0;
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END IF;
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ALTER TABLE channels ADD COLUMN IF NOT EXISTS totalmsgcountroot bigint;
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ALTER TABLE channels ADD COLUMN IF NOT EXISTS lastrootat bigint;
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ALTER TABLE channelmembers ADD COLUMN IF NOT EXISTS msgcountroot bigint;
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IF NOT msg_count_root_exist THEN
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WITH q AS (
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SELECT Channels.Id channelid, COALESCE(COUNT(*),0) newcount, COALESCE(MAX(Posts.CreateAt), 0) as lastpost
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FROM Channels
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LEFT JOIN Posts ON Channels.Id = Posts.ChannelId
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WHERE Posts.RootId = ''
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GROUP BY Channels.Id
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)
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UPDATE Channels SET TotalMsgCountRoot = q.newcount, LastRootAt=q.lastpost
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FROM q where q.channelid=Channels.Id;
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END IF;
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IF NOT mention_count_root_exist THEN
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WITH q as (SELECT TotalMsgCountRoot, Id, LastRootAt from Channels)
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UPDATE ChannelMembers CM SET MsgCountRoot=TotalMsgCountRoot
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FROM q WHERE q.id=CM.ChannelId AND LastViewedAt >= q.lastrootat;
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END IF;
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ALTER TABLE channels DROP COLUMN IF EXISTS lastrootat;
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END migrate_root_mention_count $$;
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