5 lines
322 B
SQL
5 lines
322 B
SQL
ALTER TABLE messages
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ADD FOREIGN KEY (channel_id) REFERENCES channels(id) ON DELETE CASCADE,
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ADD FOREIGN KEY (author_id) REFERENCES users(id) ON DELETE CASCADE,
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ADD FOREIGN KEY (guild_id) REFERENCES guilds(id) ON DELETE CASCADE,
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ADD FOREIGN KEY (reply_message_id) REFERENCES messages(id) ON DELETE SET NULL |