53 lines
1.8 KiB
MySQL
53 lines
1.8 KiB
MySQL
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-- 1. Create a backup of the existing tables
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CREATE TABLE channels_backup AS SELECT * FROM channels;
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CREATE TABLE files_backup AS SELECT * FROM files;
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CREATE TABLE messages_backup AS SELECT * FROM messages;
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-- 2. Drop the existing tables
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DROP TABLE channels;
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DROP TABLE files;
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DROP TABLE messages;
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-- 3. Recreate the tables with the updated schema
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CREATE TABLE IF NOT EXISTS channels (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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name TEXT NOT NULL,
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createdAt DATETIME DEFAULT (datetime('now', 'localtime'))
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);
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CREATE TABLE IF NOT EXISTS files (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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channelId INTEGER,
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filePath TEXT,
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fileType TEXT,
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fileSize INTEGER,
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originalName TEXT,
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createdAt DATETIME DEFAULT (datetime('now', 'localtime')),
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FOREIGN KEY (channelId) REFERENCES channels (id) ON DELETE CASCADE
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);
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CREATE TABLE IF NOT EXISTS messages (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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channelId INTEGER,
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content TEXT,
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fileId INTEGER NULL,
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createdAt DATETIME DEFAULT (datetime('now', 'localtime')),
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FOREIGN KEY (channelId) REFERENCES channels (id) ON DELETE CASCADE,
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FOREIGN KEY (fileId) REFERENCES files (id) ON DELETE SET NULL
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);
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-- 4. Migrate the data back from the backup tables
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INSERT INTO channels (id, name, createdAt)
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SELECT id, name, createdAt FROM channels_backup;
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INSERT INTO files (id, channelId, filePath, fileType, fileSize, originalName, createdAt)
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SELECT id, channelId, filePath, fileType, fileSize, originalName, createdAt FROM files_backup;
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INSERT INTO messages (id, channelId, content, fileId, createdAt)
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SELECT id, channelId, content, fileId, createdAt FROM messages_backup;
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-- 5. Drop the backup tables
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DROP TABLE channels_backup;
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DROP TABLE files_backup;
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DROP TABLE messages_backup;
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