á ÔÁË:
> select 1, 1/3, cast(null as NUMBER(9)) from dual
ÞÔÏ ÏÐÒÅÄÅÌÉÔ?

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ó Õ×ÁÖÅÎÉÅÍ, áÎÄÒÅÊ íÏÇÉÌØÎÙÊ.



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