11 lines
560 B
MySQL
11 lines
560 B
MySQL
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-- Migration 109: Create read_receipts table (v0.502 CH1-01)
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CREATE TABLE IF NOT EXISTS read_receipts (
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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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read_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
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CONSTRAINT uq_read_receipts_user_message UNIQUE (user_id, message_id)
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);
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CREATE INDEX idx_read_receipts_message_id ON read_receipts(message_id);
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CREATE INDEX idx_read_receipts_user_id ON read_receipts(user_id);
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