11 lines
562 B
MySQL
11 lines
562 B
MySQL
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-- Migration 111: Create message_reactions table (v0.502 CH1-01)
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CREATE TABLE IF NOT EXISTS message_reactions (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
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message_id UUID NOT NULL REFERENCES messages(id) ON DELETE CASCADE,
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emoji VARCHAR(50) NOT NULL,
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created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
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CONSTRAINT uq_message_reactions_user_message_emoji UNIQUE (user_id, message_id, emoji)
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);
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CREATE INDEX idx_message_reactions_message_id ON message_reactions(message_id);
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