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SQL> create index i_big_emp_hiredate on bonus (hiredate DESC);
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SQL> SELECT empno, ename, hiredate
FROM big_emp
WHERE hiredate >= TO_DATE('1980-01-01', 'YYYY-MM-DD') and hiredate <= TO_DATE('1983-12-31', 'YYYY-MM-DD');
EMPNO ENAME HIREDATE
-----------------------------------------------
60 JONES 1983-12-30
197 SMITH 1983-12-27
128 ALLEN 1983-12-21
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