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
127 строки
4.2 KiB
SQL
127 строки
4.2 KiB
SQL
CREATE PROCEDURE MigrateRootMentionCount () BEGIN DECLARE MentionCountRoot_EXIST INT; DECLARE MsgCountRoot_EXIST INT;
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SELECT COUNT(*)
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FROM INFORMATION_SCHEMA.COLUMNS
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WHERE TABLE_NAME = 'Channels'
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AND table_schema = DATABASE()
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AND COLUMN_NAME = 'TotalMsgCountRoot' INTO MsgCountRoot_EXIST;
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SELECT COUNT(*)
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FROM INFORMATION_SCHEMA.COLUMNS
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WHERE TABLE_NAME = 'ChannelMembers'
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AND table_schema = DATABASE()
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AND COLUMN_NAME = 'MsgCountRoot' INTO MentionCountRoot_EXIST;
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SET @tmp_count_root := 0;
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IF(MentionCountRoot_EXIST = 1) THEN
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SELECT @tmp_count_root := COUNT(*)
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FROM ChannelMembers
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WHERE MsgCountRoot IS NULL
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OR MentionCountRoot IS NULL;
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END IF;
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SET @preparedStatement =
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(SELECT IF(
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(SELECT COUNT(*)
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FROM INFORMATION_SCHEMA.COLUMNS
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WHERE TABLE_NAME = 'ChannelMembers'
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AND table_schema = DATABASE()
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AND COLUMN_NAME = 'MentionCountRoot') > 0, 'SELECT 1', 'ALTER TABLE ChannelMembers ADD COLUMN MentionCountRoot bigint(20);'));
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PREPARE alterIfNotExists FROM @preparedStatement;
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EXECUTE alterIfNotExists;
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DEALLOCATE PREPARE alterIfNotExists;
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IF(@tmp_count_root > 0) THEN
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UPDATE ChannelMembers
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INNER JOIN
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(SELECT ChannelId,
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COALESCE(SUM(UnreadMentions), 0) AS UnreadMentions,
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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,
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ThreadMemberships.UserId) AS q ON q.ChannelId = ChannelMembers.ChannelId
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AND q.UserId = ChannelMembers.UserId
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AND ChannelMembers.MentionCount > 0
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SET MentionCountRoot = ChannelMembers.MentionCount - q.UnreadMentions;
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END IF;
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SET @preparedStatement =
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(SELECT IF(
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(SELECT COUNT(*)
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FROM INFORMATION_SCHEMA.COLUMNS
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WHERE TABLE_NAME = 'Channels'
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AND table_schema = DATABASE()
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AND COLUMN_NAME = 'TotalMsgCountRoot') > 0, 'SELECT 1', 'ALTER TABLE Channels ADD COLUMN TotalMsgCountRoot bigint(20);'));
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PREPARE alterIfNotExists FROM @preparedStatement;
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EXECUTE alterIfNotExists;
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DEALLOCATE PREPARE alterIfNotExists;
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SET @preparedStatement =
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(SELECT IF(
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(SELECT COUNT(*)
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FROM INFORMATION_SCHEMA.COLUMNS
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WHERE TABLE_NAME = 'Channels'
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AND table_schema = DATABASE()
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AND COLUMN_NAME = 'LastRootAt') > 0, 'SELECT 1', 'ALTER TABLE Channels ADD COLUMN LastRootAt bigint(20);'));
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PREPARE alterIfNotExists FROM @preparedStatement;
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EXECUTE alterIfNotExists;
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DEALLOCATE PREPARE alterIfNotExists;
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SET @preparedStatement =
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(SELECT IF(
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(SELECT COUNT(*)
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FROM INFORMATION_SCHEMA.COLUMNS
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WHERE TABLE_NAME = 'ChannelMembers'
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AND table_schema = DATABASE()
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AND COLUMN_NAME = 'MsgCountRoot') > 0, 'SELECT 1', 'ALTER TABLE ChannelMembers ADD COLUMN MsgCountRoot bigint(20);'));
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PREPARE alterIfNotExists FROM @preparedStatement;
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EXECUTE alterIfNotExists;
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DEALLOCATE PREPARE alterIfNotExists;
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IF(MsgCountRoot_EXIST = 0) THEN
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UPDATE Channels
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INNER JOIN
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(SELECT Channels.Id channelid,
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COALESCE(COUNT(*), 0) newcount,
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COALESCE(MAX(Posts.CreateAt), 0) AS lastpost
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FROM Channels
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LEFT JOIN Posts
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FORCE INDEX (idx_posts_channel_id_update_at) ON Channels.Id = Posts.ChannelId
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WHERE Posts.RootId = ''
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GROUP BY Channels.Id) AS q ON q.channelid = Channels.Id
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SET TotalMsgCountRoot = q.newcount,
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LastRootAt = q.lastpost;
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END IF;
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IF(MentionCountRoot_EXIST = 0) THEN
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UPDATE ChannelMembers CM
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INNER JOIN
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(SELECT TotalMsgCountRoot,
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Id,
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LastRootAt
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FROM Channels) AS q ON q.id = CM.ChannelId
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AND LastViewedAt >= q.lastrootat
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SET MsgCountRoot = TotalMsgCountRoot;
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END IF;
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SET @preparedStatement =
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(SELECT IF(
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(SELECT COUNT(*)
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FROM INFORMATION_SCHEMA.COLUMNS
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WHERE TABLE_NAME = 'Channels'
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AND table_schema = DATABASE()
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AND COLUMN_NAME = 'LastRootAt' ) > 0, 'ALTER TABLE Channels DROP COLUMN LastRootAt;', 'SELECT 1'));
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PREPARE alterIfExists
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FROM @preparedStatement;
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EXECUTE alterIfExists;
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DEALLOCATE PREPARE alterIfExists;
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END;
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CALL MigrateRootMentionCount ();
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DROP PROCEDURE IF EXISTS MigrateRootMentionCount;
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