Different Number of Records

Question

Good Morning All,
I'm using a SSIS package to load data into the DWH. The source is ORACLE and destination is SQL SERVER. My first question is :
1) There is a column in the source table "FULLDATETIME" datatype "DATE". But when i load it into the SQLSERVER its stored as date with timestamp.
For example in the source column if the value is "05-FEB-14" in the destination table its loaded as "2014-02-05 21:15:00.000".I'm not using any transformation it is a straight load.
2) My second question is i want to schedule this package to just load the delta records, for this i'm using the FULLDATETIME column from the Source table and want to load just the previous date's records. Please see the below queries i'm getting two different
sets of records. The first SQL is giving me 5 records and the second one is giving me 1619 records. I'm confused as both queries mean the same.
select t1.*,t2.year,t2.monthofyear,t2.dayofmonth,t2.fulldatetime
from TABLEA t1
inner join TABLEB t2
on t1.intervalkey=t2.datekey
where t2.fulldatetime=trunc(sysdate)-2
select t1.*,t2.year,t2.monthofyear,t2.dayofmonth,t2.fulldatetime
from TABLEA t1
inner join TABLEB t2
on t1.intervalkey=t2.datekey
where t2.year=2014
and t2.monthofyear=2
and t2.dayofmonth=5
Please advice as what i'm overlooking here.
Thanks

Answer 1

Thanks Tom Phillips,
If you look at my above queries i'm joining those to load the first table TABLEA every night with the delta records. When you said that the YEAR, MONTHOFYEAR and DAYOFMONTH are not based on FULLDATETTIME i'm confused as all these columns are part of the
TIME DIMENSION table in the Source, on the othr hand in my second query i have FULLDATETIME field and when i run the sql for the 1619 records it shows the '05-FEB-2014' Value. Is there a way where i can load just the records from the previous day based on
these fields (YEAR,MONTHOFYEAR,DAYOFMONTH)?
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