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database/migrations/000021_add_poll_relationships.up.sql

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+-- Add relationship fields to polls table
+ALTER TABLE polls ADD COLUMN IF NOT EXISTS related_article_id INTEGER REFERENCES articles(id) ON DELETE SET NULL;
+ALTER TABLE polls ADD COLUMN IF NOT EXISTS related_event_id INTEGER REFERENCES events(id) ON DELETE SET NULL;
+ALTER TABLE polls ADD COLUMN IF NOT EXISTS related_video_url VARCHAR(500);
+
+-- Create indexes for better query performance
+CREATE INDEX IF NOT EXISTS idx_polls_related_article_id ON polls(related_article_id);
+CREATE INDEX IF NOT EXISTS idx_polls_related_event_id ON polls(related_event_id);
+CREATE INDEX IF NOT EXISTS idx_polls_related_video_url ON polls(related_video_url);
+
+-- Add comments for documentation
+COMMENT ON COLUMN polls.related_article_id IS 'Link poll to a blog article';
+COMMENT ON COLUMN polls.related_event_id IS 'Link poll to an event/activity';
+COMMENT ON COLUMN polls.related_video_url IS 'Link poll to a YouTube video URL or ID';