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GRADE(µÈ¼¶)  LOSAL(ÏÂÏÞ)  HISAL(ÉÏÏß)
1, 700, 1200
2, 1201, 1400
3, 1401, 2000
4, 2001, 3000
5, 3001, 9999

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SELECT EMPNO,ENAME,JOB,MGR,
      HIREDATE,DEPTNO,SAL,
      CASE
          WHEN SAL BETWEEN 700  AND 1200 THEN 1;
          WHEN SAL BETWEEN 1201 AND 1400 THEN 2;
          WHEN SAL BETWEEN 1401 AND 2000 THEN 3;
          WHEN SAL BETWEEN 2001 AND 3000 THEN 4;
          WHEN SAL BETWEEN 3001 AND 9999 THEN 5;
      END CASE AS GRADE,COMM
  from EMP;

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