51 lines
1.9 KiB
SQL
51 lines
1.9 KiB
SQL
-- Voting System Tables
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-- Vote Events Table
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CREATE TABLE IF NOT EXISTS vote_events (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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title VARCHAR(255) NOT NULL,
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description TEXT,
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start_date TIMESTAMP WITHOUT TIME ZONE NOT NULL,
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end_date TIMESTAMP WITHOUT TIME ZONE NOT NULL,
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is_active BOOLEAN NOT NULL DEFAULT TRUE,
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created_at TIMESTAMP WITHOUT TIME ZONE DEFAULT CURRENT_TIMESTAMP,
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updated_at TIMESTAMP WITHOUT TIME ZONE DEFAULT CURRENT_TIMESTAMP
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);
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CREATE TRIGGER trg_vote_events_updated_at
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BEFORE UPDATE ON vote_events
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FOR EACH ROW EXECUTE FUNCTION set_updated_at();
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-- Candidates Table
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CREATE TABLE IF NOT EXISTS candidates (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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vote_event_id UUID NOT NULL REFERENCES vote_events(id) ON DELETE CASCADE,
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name VARCHAR(255) NOT NULL,
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image_url VARCHAR(500),
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description TEXT,
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created_at TIMESTAMP WITHOUT TIME ZONE DEFAULT CURRENT_TIMESTAMP,
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updated_at TIMESTAMP WITHOUT TIME ZONE DEFAULT CURRENT_TIMESTAMP
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);
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CREATE TRIGGER trg_candidates_updated_at
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BEFORE UPDATE ON candidates
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FOR EACH ROW EXECUTE FUNCTION set_updated_at();
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CREATE INDEX IF NOT EXISTS idx_candidates_vote_event_id ON candidates(vote_event_id);
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-- Votes Table
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CREATE TABLE IF NOT EXISTS votes (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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vote_event_id UUID NOT NULL REFERENCES vote_events(id) ON DELETE CASCADE,
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candidate_id UUID NOT NULL REFERENCES candidates(id) ON DELETE CASCADE,
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user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
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created_at TIMESTAMP WITHOUT TIME ZONE DEFAULT CURRENT_TIMESTAMP
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);
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-- Ensure one vote per user per event
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CREATE UNIQUE INDEX IF NOT EXISTS uq_votes_user_event
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ON votes(user_id, vote_event_id);
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CREATE INDEX IF NOT EXISTS idx_votes_vote_event_id ON votes(vote_event_id);
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CREATE INDEX IF NOT EXISTS idx_votes_candidate_id ON votes(candidate_id);
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CREATE INDEX IF NOT EXISTS idx_votes_user_id ON votes(user_id); |