SQL सर्वर - प्रति राज्य एक्स यादृच्छिक रिकॉर्ड खींचें

उपयोग करें:

WITH sample AS (
 SELECT t.*,
        ROW_NUMBER() OVER (PARTITION BY t.state
                               ORDER BY NEWID()) AS rank
   FROM ZIPCODES t)
SELECT s.*
  FROM sample s
 WHERE s.rank <= 5