Mission Impossible ? Select/Append Query

mrchonginhk

Well-known Member
Joined
Dec 3, 2004
Messages
679
Table
Col 1, 2, 3
=======
A, B, B
C, D, E

=======
I wish to:-

(1) If Col 2 = Col 3, then assign Col 4 = 1

(2) If Col 2 <> Col 3, then assign Col 4 = 1 in that record, then create same record plus Col4=-1 first, and then create another record
Col 3 = Col 2, assign Col4 =1

Col 1, 2, 3, 4
==========
A, B, B, 1

C, D, E, 1
C, D, E, -1
C, D, D, 1


The condition is VBA is forbidden. How can I do this ?
Pls help...
 

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giacomo

Well-known Member
Joined
Feb 20, 2002
Messages
1,796
Code:
select col1 , col2, col3, 1 as col4
from someTable

UNION

select col1 , col2, col3, -1
from someTable
where col2 <> col3

UNION

select col1 , col2, col2, 1
from someTable
where col2 <> col3

hth,
Giacomo
 

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