diff two SQL Server tables

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SELECT t1.id
FROM table1 t1
INNER JOIN table2 t2 ON t1.id = t2.id
WHERE ISNULL(t1.field1,'') <> ISNULL(t2.field1,'')
      OR ISNULL(t1.field2,'') <> ISNULL(t2.field2,'')
      ...