Chill carrots, pineapple, raisins, yogurt, and lemon juice in refrigerator for at least 1 hour.
Place pineapple (with juice) in a large bowl. Stir in sugar until it dissolves in the pineapple juice.
Add carrots, raisins, yogurt, lemon juice, and salt. Stir until just combined.
Refrigerate until ready to serve.