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to_date('1982-11-11','yyyy-mm-dd')
to_date('1982/11/11','yyyy/mm/dd')
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update emp set (job,sal,comm)=(select job,sal,comm from emp where ename='SMITH') where ename='SCOTT';
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9.2.0.4  = 3095277
9.2.0.5  = 3501955
9.2.0.6  = 3948480
9.2.0.7  = 4163445
9.2.0.8  = 4547809£¨9i×îÖÕ£©
10.1.0.3 = 3761843
10.1.0.4 = 4163362
10.1.0.5 = 4505133
10.2.0.2 = 4547817
10.2.0.3 = 5337014
10.2.0.4 = 6810189
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