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SQL Resultset field order

Posted on 2001-06-08
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Last Modified: 2013-12-18
Here is my SQL:

Qry.SQL = "select A.ABAN8, A.ABMLNM, A.ALADD1, A.ALADD2, A.ALADD3, A.ALADD4, A.ALCTY1, A.ALADDS, A.ALADDZ, C.A5CLMG, B.MAAN8, C.ABALPH, D.ABALPH, D.CAANAME from EDWDATA1.F01901 A, EDWDATA1.F0150 B, EDWDATA1.F01901 C, EDWARDQRY.F550101B D where (A.ABAT1 = 'IP' or A.ABAT1 = 'C') and A.ABAN8 = B.MAPA8 and B.MAOSTP = 'PAY' and B.MAAN8 = C.ABAN8 and C.A5CLMG = D.BROKER order by B.MAAN8, A.ABAN8"

To access the result set values I use:

doc.CustomerNumber = Res.GetValue(1)
doc.BrokerNumber = Res.GetValue(2)
ETC, ETC
doc.PersonName = Res.GetValue(14)


My question is I want to add a new field but I don't want to have to realign all the code.  I want to add a 15th value.  It's confusing to know which order each field will be in especially since there are three files I'm reading from.  I want my new field A.xyzfield to show up as the last value or Res.GetValue(15).  How should I structure the HTML?

-Snocross
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Question by:snocross
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Expert Comment

by:HemanthaKumar
ID: 6167900
I am not very sure what you want, but to add another column to be extracted from table add the column name as shown

select A.ABAN8, A.ABMLNM, A.ALADD1, A.ALADD2, A.ALADD3, A.ALADD4, A.ALCTY1, A.ALADDS, A.ALADDZ,
C.A5CLMG, B.MAAN8, C.ABALPH, D.ABALPH, D.CAANAME , A.xyzfield

Orderby governs the ordering

GetValue gives the column value, not the row value. So ordering should not be a problem in your case.

~Hemanth
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by:snocross
ID: 6167903
Maybe I need to clarify my question just in case...

If my SQL is simple like this:

Qry.SQL = "select A.ABAN8, A.ABMLNM, A.ALADD1 from EDWDATA1.F01901 A"

I'm assuming Res.GetValue(1) will be ABAN8 and Res.GetValue(2) will be ABMLNM and Res.GetValue(3) will be ALADD1.  Now if I move the fields around in the SQL will they get returned in that new order?  I'm just trying to figure out how the result set fields are ordered.  Are they basicly ordered in the order that I type them in the SQL?
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by:snocross
ID: 6167913
Heman, if you do not use OrderBy then what order does it put the columns?  The order that I typed them regardless of the order on the source files?
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Accepted Solution

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HemanthaKumar earned 200 total points
ID: 6168227
There is a confusion here ?@!

Orderby affects the resultset, not the way you retrieved the columns.

eg:
Select col1, col2, col4, col3 from x orderby col2

will order the result by col2 (default ascending) but the order in which columns are retrieved would be the way you specify.

Got it!



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Author Comment

by:snocross
ID: 6177763
So your example would display like this??

col2 (sorted), col1, col4, col3

I've done some testing now and if I don't use an OrderBy statement it seems to list them in the exact order that I write them in the sql.
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Expert Comment

by:HemanthaKumar
ID: 6178186
no not like that

If your table is like this

col1 col2 col3 col4
x     3    xx    a
y     2    yy    b
z     1    zz    c

The the query will return the result as

z    1    zz    c
y    2    yy    b
x    3    xx    a

See the difference.

~Hemanth
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by:snocross
ID: 6178547
Ok, but I don't care about the sorting, I am worried about the arrangement of the columns.  Anyway, the points are yours but my conclusion is that it arranges them in the order that I list them in my SQL.
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Expert Comment

by:HemanthaKumar
ID: 6178631
yes
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Author Comment

by:snocross
ID: 6178654
Yes?  I didn't ask a yes/no question...
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