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ÿÌìÎçÒ¹12µã                       'TRUNC(SYSDATE + 1)'
ÿÌìÔçÉÏ8µã30·Ö                  'TRUNC(SYSDATE + 1) + (8*60+30)/(24*60)'
ÿÐÇÆÚ¶þÖÐÎç12µã                 'NEXT_DAY(TRUNC(SYSDATE ), ''TUESDAY'' ) + 12/24'
ÿ¸öÔµÚÒ»ÌìµÄÎçÒ¹12µã        'TRUNC(LAST_DAY(SYSDATE ) + 1)'
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