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Select * ;
, Cast(Null as N(10,2)) as 字段1 ;
, Cast(Null as C(10)) as 字段2 ;
, Cast(Null as D) as 字段3 ;
, Cast(Null as L) as 字段4 ;
from 表A
Select * ;
, Cast(0 as N(10,2)) as 字段1 ;
, Cast('' as C(10)) as 字段2 ;
, Cast('' as D) as 字段3 ;
, Cast(0 as L) as 字段4 ;
from 表A