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> Coorect table data by VB?!!    
 
   
hasardeux
post Feb 24 2005, 11:14 AM
Post #1

UtterAccess Veteran
Posts: 375



Hi,

I would like to correct some data in my tables

My conditions:

If COMPTE=612210 and Extension<>"CFRN1" then EXTENSION="CFRN9"
If COMPTE=612210 and Extension<>"CFRN2" then EXTENSION="CFRN9"
.....

If COMPTE=612220 and Extension<>"CFRN4" then EXTENSION="CFRN10"
If COMPTE=612220 and Extension<>"CFRN10" then EXTENSION="CFRN10"

I use this code:

CODE


Select Case COMPTE

                  Case 612210: Select Case EXTENSION
    
                    Case Is <> "CFRN1" Or "CFRN2" Or "CFRN2" Or "CFRN2" Or "CFRN2": EXTENSION = "CFRN9"
                    
                  End Select
               Case 612220: Select Case EXTENSION
    
                    Case Is <> "CFRN4" Or "CFRN10": EXTENSION = "CFRN10"
                    
                 End Select
    
    
End Select


But, as a result, the correction isn't done

What's the problem?

Could help me tu correct this code

I would not use queries please!!

Thank you
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ScottGem
post Feb 24 2005, 11:30 AM
Post #2

UtterAccess VIP / UA Clown
Posts: 25,046
From: LI, NY



First, The correct syntax for Access is:

Select Case variable
Case x
action
Case y
action
Case z
action
End Select

But where and how are you using this?
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hasardeux
post Feb 24 2005, 11:35 AM
Post #3

UtterAccess Veteran
Posts: 375



Your example is relating to a sample ond one condition.

But, in my example, I would use 2 conditions at the same time (COMPTE & EXTENSION).

The purpose is to correct some Data of EXTENSION when the conditions aboe are satisfited.

Without using queries
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ScottGem
post Feb 24 2005, 01:02 PM
Post #4

UtterAccess VIP / UA Clown
Posts: 25,046
From: LI, NY



You can't update a table without using an Update query. I realize your criteria was more complex, but the point is you were using the Case IS whihc was incorrect.
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glue
post Feb 24 2005, 01:12 PM
Post #5

UtterAccess VIP
Posts: 894
From: ohio



scott- huh? "(You can't update a table without using an Update query)"

well you might not want to, but using recordsets you can.

however, Update queries are fast and efficient, and I can't think of why you wouldn't want to use one ,even in this situation.

Aaron
CODE
dim s as string

s="UPDATE YourTable SET YourTable.Extension = 'CFRN9' WHERE (YourTable.Compte=612210 AND YourTable.Extension<>'CFRN1' AND YourTable.Extension<>'CFRN2')"

currentdb.execute s

s="UPDATE YourTable SET YourTable.Extension = 'CFRN10' WHERE (YourTable.Compte=612220 AND YourTable.Extension<>'CFRN4' AND YourTable.Extension<>'CFRN10')"

currentdb.execute s


Edited by: glue on Thu Feb 24 13:19:28 EST 2005.
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ScottGem
post Feb 24 2005, 01:25 PM
Post #6

UtterAccess VIP / UA Clown
Posts: 25,046
From: LI, NY



Glue,
whoops, I wasn't thinking along those lines. I was thinking function vs query not query vs recordset.
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glue
post Feb 24 2005, 02:00 PM
Post #7

UtterAccess VIP
Posts: 894
From: ohio



Scott,
Before I discovered the wonders of update queries, I had written literally thousands of lines of unnecessary recordset code over the previous few years. So I like to try to keep other people from making the same mistake. I never considered telling them that it can't be done without update queries -- but that might be the best approach, I wish somebody would've told me that !:>

Hasardeux-
If you still want help setting up the select case statement, let me know. Update queries are faster (often MUCH faster) and require way less coding, and I've been replacing all my clunky recordset code w/ them since I saw the error of my ways.

Aaron
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hasardeux
post Feb 24 2005, 02:04 PM
Post #8

UtterAccess Veteran
Posts: 375



Thank you glue.

But, please how could I convert recordset to case select function? I want to know where's my faults

Thanks
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ScottGem
post Feb 24 2005, 02:41 PM
Post #9

UtterAccess VIP / UA Clown
Posts: 25,046
From: LI, NY



You are comparing apples and oranges here. A Select Case and a table update are two different things. You may use a Select Case to get a value that will be used to update a table, but how you update the table is indifferent to the Select Case.

To be more specific, lets say you have a function named UpdExtension(). That function uses a Select Case to determine what value to update Expression to, based on the value of other fields. You can then use that functioin in either a query or DAO coding.

...SET [Extension] = UpdExtension([COMPTE],[EXTENSION])

or

rs.Extension = UpdExtension([COMPTE],[EXTENSION])

As Glue said, using an update query is more efficient but it doesn't change the SELECT CASE at all.
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