select * from bas_dredge,(SELECT C_ENTERPRISEID,MAX(D_UTIME) D_LTIME FROM BAS_DREDGE GROUP BY C_ENTERPRISEID) as temp_dredge
where bas_dredge.C_ENTERPRISEID=temp_dredge.C_ENTERPRISEID and bas_dredge.d_utime=temp_dredge.d_ltime;

select * from bas_dredge,(SELECT C_ENTERPRISEID,MAX(D_UTIME) D_LTIME FROM BAS_DREDGE GROUP BY C_ENTERPRISEID) as temp_dredge
where bas_dredge.C_ENTERPRISEID=temp_dredge.C_ENTERPRISEID and bas_dredge.d_utime=temp_dredge.d_ltime;
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