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Default ADO slow recordset getrows

Not quite sure what you mean, but this is the connection string:

EasySoftConn = "DSN=" & GetS6000DSN() & ";" & _
"UID=" & Username & _
";PWD=" & Password & _
";DB=" & GetIBPath() & _
";OLDMETADATA=1;"

RBS


"Random" <Random@nwhere wrote in message
...
Have you tried using vbs to read to a text file? Don't know why, but
the slowdown could be coming from Excel. This would be one way to
check.

On Sun, 10 Aug 2003 19:15:13 +0100, "RB Smissaert"
wrote:

Don't quite understand it but I solved the problem by changing the

datatype
for the variable c to integer rather than byte.
How can this make the difference if c can only be byte data from 0 to 4?

Actually running the loop is slightly faster than using the GetRows

method,
which seems strange to me as well.
Still both methods are way to slow, considering I can get the data with
IB_SQL in a few seconds, whereas with ADO we are talking about more than

7
minutes.

Any advice greatly appreciated.

RBS


"RB Smissaert" wrote in message
...
As GetRows is so slow I tried to work with just the RecordSet itself

rather
than transferring it to an array.
I therefor tried this loop:

Dim testarray(0 To 1000, 0 To 4) As String

If Not rs.EOF Then
Do While Not rs.EOF
For c = 0 To 4
testarray(n, c) = rs.Fields(c).Value
Next
n = n + 1
rs.MoveNext
Loop
End If

However this breaks down on the first cycle with the message:
Item cannot be found in the collection corresponding to the requested

name
or ordinal.
This happens already when the counters n and c are still 0.
Strangely, when I do MsgBox rs.Fields(0) before running this loop it

works
fine.
Must be overlooking something really simple here, but just can't see

it.
Thanks for any advice.


RBS


"RB Smissaert" wrote in message
...
Using Excel XP.
Using ADO with ODBC to connect to an Interbase database.
The ODBC driver is the one from EasySoft

The basic code goes like this:

Public ADOConn As ADODB.Connection

Set ADOConn = New ADODB.Connection



Dim rs As ADODB.Recordset
dim testArray as variant

Set rs = New ADODB.Recordset

'any useful properties to set here?
'rs.CursorLocation = adUseServer
'rs.CacheSize = 30

rs.Open Source:=SQLStatement, _
ActiveConnection:=ADOConn, _
CursorType:=adOpenForwardOnly, _
LockType:=adLockReadOnly, _
Options:=adCmdText

testArray = rs.GetRows


Now the last statement can take a long time.
Strangely this seems to depend on the SQLStatement, but not on the

number
of
records returned.
So one query can return a large number of records and the rs.GetRows

goes
very fast, whereas another SQLStatement returns less records, but
rs.GetRows
takes much longer.
Tried all different properties for the recordset, but it doesn't make

much
difference.
One problem is that I only can see how many records rs.Open produces

after
transferring to an array because rs.RecordCount doesn't work.

Any advice here greatly appreciated.



RBS







 
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