12 lines
531 B
SQL
12 lines
531 B
SQL
-- Create the messages table
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CREATE TABLE IF NOT EXISTS messages (
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id BIGSERIAL PRIMARY KEY,
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conversation_id TEXT NOT NULL,
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message_type VARCHAR(10) NOT NULL CHECK (message_type IN ('human', 'ai', 'tool')),
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content TEXT NOT NULL,
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sequence_number INTEGER NOT NULL CHECK (sequence_number >= 0),
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created_at TIMESTAMPTZ DEFAULT NOW()
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);
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-- Index for fast retrieval of all messages in a conversation (in order)
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CREATE INDEX IF NOT EXISTS idx_messages_conversation ON messages (conversation_id, sequence_number); |