BUG - possible UPDATE bug in multi-record?

Using this style of command through an SQL tool it
decrements each row in the list by 1 cent.

UPDATE GeneralLedger
SET CBalPer0 = CBalPer0 + (-0.01),
PBalPer0 = PBalPer0 + (-0.01)
WHERE AccountSequence IN (56,54,3,2)

(I only use the brackets to handle sign of amount
as in next example)

Trying to execute it through ODBC...

Amount = -0.01
AccountSequence = "(56,54,3,2)"
SQL= "UPDATE GeneralLedger " & _
"SET CBalPer0 = CBalPer0 + (" & Amount & "), " & _
"PBalPer0 = PBalPer0 + (" & Amount & ") " & _
"WHERE AccountSequence IN " & AccountSequenceList

myConnection.Execute(SQL)

...causes movements in other accounts and incorrect balances!

I am trying with 2 separate UPDATE statements...

SQL= "UPDATE GeneralLedger " & _
"SET CBalPer0 = CBalPer0 + (" & Amount & "), " & _
"WHERE AccountSequence IN " & AccountSequenceList

myConnection.Execute(SQL)

SQL= "UPDATE GeneralLedger " & _
"SET PBalPer0 = PBalPer0 + (" & Amount & ") " & _
"WHERE AccountSequence IN " & AccountSequenceList

myConnection.Execute(SQL)

...and yes this does work.

--
Keith Gray

Technical Development Manager
Heart Consulting Services P/L
mailto:keith(at)heart(dot)com(dot)au