Consider having tblCorresponden ce, then copying & pasting
it to tblCorresponden ce1 - such that they are identical. Then
consider the following UNION SELECT statement...
SELECT tblCorresponden ce.CorrespID, tblCorresponden ce.VehicleJobID ,
tblCorresponden ce.OutDate, tblCorresponden ce.OutType,
tblCorresponden ce.OutProcessor , tblCorresponden ce.InDate,
tblCorresponden ce.InRefDate, tblCorresponden ce.InType,
tblCorresponden ce.InProcessor, tblCorresponden ce.ToWhom,
tblCorresponden ce.CorrespTDSta mp, tblCorresponden ce.UserID,
tblCorresponden ce.Tracked
FROM tblCorresponden ce
WHERE (((tblCorrespon dence.VehicleJo bID)=901) AND
((tblCorrespond ence.OutType)=" 00"))
UNION SELECT tblCorresponden ce1.CorrespID,
tblCorresponden ce1.VehicleJobI D, tblCorresponden ce1.OutDate,
tblCorresponden ce1.OutType, tblCorresponden ce1.OutProcesso r,
tblCorresponden ce1.InDate, tblCorresponden ce1.InRefDate,
tblCorresponden ce1.InType, tblCorresponden ce1.InProcessor ,
tblCorresponden ce1.ToWhom, tblCorresponden ce1.CorrespTDSt amp,
tblCorresponden ce1.UserID, tblCorresponden ce1.Tracked
FROM tblCorresponden ce1
WHERE (((tblCorrespon dence1.VehicleJ obID)=901) AND
((tblCorrespond ence1.OutType)= "00"));
Knowing full well that both tables contain 1 record meeting the
specified criteria (record ID #69203) - why do I see only a single
row in the query output?
If I change the criteria specified for tblCorresponden ce1 to
WHERE (((tblCorrespon dence1.VehicleJ obID)=902) AND
((tblCorrespond ence1.OutType)= "00")); (replacing 901 with 902)
I see 2 rows in the output. I'm not saying I have a fruitful purpose
for pulling the same record number from 2 identical tables
I even tried the following. I still get the same results - a single
record in the output. Anybody know why?
SELECT tblCorresponden ce.CorrespID AS ONE,
tblCorresponden ce.VehicleJobID AS TWO, tblCorresponden ce.OutDate AS
THREE, tblCorresponden ce.OutType AS FOUR,
tblCorresponden ce.OutProcessor AS FIVE, tblCorresponden ce.InDate AS
SIX, tblCorresponden ce.InRefDate AS SEVEN, tblCorresponden ce.InType AS
EIGHT, tblCorresponden ce.InProcessor AS NINE, tblCorresponden ce.ToWhom
AS TEN, tblCorresponden ce.CorrespTDSta mp AS ELEVEN,
tblCorresponden ce.UserID AS TWELVE, tblCorresponden ce.Tracked AS
THIRTEEN
FROM tblCorresponden ce
WHERE (((tblCorrespon dence.VehicleJo bID)=901) AND
((tblCorrespond ence.OutType)=" 00"))
UNION SELECT tblCorresponden ce1.CorrespID AS ONE,
tblCorresponden ce1.VehicleJobI D AS TWO, tblCorresponden ce1.OutDate AS
THREE, tblCorresponden ce1.OutType AS FOUR,
tblCorresponden ce1.OutProcesso r AS FIVE, tblCorresponden ce1.InDate AS
SIX, tblCorresponden ce1.InRefDate AS SEVEN, tblCorresponden ce1.InType
AS EIGHT, tblCorresponden ce1.InProcessor AS NINE,
tblCorresponden ce1.ToWhom AS TEN, tblCorresponden ce1.CorrespTDSt amp AS
ELEVEN, tblCorresponden ce1.UserID AS TWELVE,
tblCorresponden ce1.Tracked AS THIRTEEN
FROM tblCorresponden ce1
WHERE (((tblCorrespon dence1.VehicleJ obID)=901) AND
((tblCorrespond ence1.OutType)= "00"));
2  2255 
MLH <CR**@NorthStat e.netwrote in
news:68******** *************** *********@4ax.c om:
Consider having tblCorresponden ce, then copying & pasting
it to tblCorresponden ce1 - such that they are identical. Then
consider the following UNION SELECT statement...
Knowing full well that both tables contain 1 record meeting the
specified criteria (record ID #69203) - why do I see only a single
row in the query output?
If I change the criteria specified for tblCorresponden ce1 to
WHERE (((tblCorrespon dence1.VehicleJ obID)=902) AND
((tblCorrespond ence1.OutType)= "00")); (replacing 901 with 902)
I see 2 rows in the output. I'm not saying I have a fruitful
vpurpose
for pulling the same record number from 2 identical tables
I even tried the following. I still get the same results -
single
record in the output. Anybody know why?
The drafters of the SQL language figured correctly that the
majourity of UNION queries would use the DISTINCT Clause, so that is
what is the default, contrary to a normal SELECT query has ALL as
the default.
Like most languages, not specifying ALL|DISTINCT results in the
default being applied.
Override the default? Just add the ALL Keyword after the UNION
SELECT statement.
--
Bob Quintal
PA is y I've altered my email address.
--
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