Using an ADODB record set to perform a joined update query - sql

Question

In the following code, I would like to join ADODB record set 'rs3' to table 'tblValueChain10' and update 3 different columns based on the values extracted in the ADODB record set 'rs3'. Currently, the update query is not returning anything.
Dim st_Sql3 As String
Dim rs3 As ADODB.Recordset
Set rs3 = New ADODB.Recordset
Dim Max3 As Integer
rs3.Open "SELECT tblRisk05Holding.IDMacroProcesso01, tblRisk05Holding.Level01Risk, Max(tblRisk05Holding.ManualityStatus) AS MaxDiManualityStatus, Max(tblRisk05Holding.RiskProbabilityStatus) AS MaxDiRiskProbabilityStatus, Max(tblRisk05Holding.RiskExposureStatus) AS MaxDiRiskExposureStatus FROM tblRisk05Holding GROUP BY tblRisk05Holding.IDMacroProcesso01, tblRisk05Holding.Level01Risk", CurrentProject.Connection
st_Sql3 = "UPDATE tblValueChain10 INNER JOIN rs3 ON (tblValueChain10.IDMacroProcesso01 = tblRisk05Holding.IDMacroProcesso01) SET L1RiskManuality = " & rs3.Fields(2) & ", L1RiskProbability = " & rs3.Fields(3) & ", L1RiskGravity = " & rs3.Fields(4) & ""
Application.DoCmd.RunSQL (st_Sql2)
rs3.Close
Set rs3 = Nothing

Answer 1

Access never allows you to use a recordset object as a data source in another query. It doesn't matter whether you have an ADO or DAO recordset; you can't do it. And the query type (SELECT, UPDATE, INSERT, etc.) also doesn't matter; you can't use a recordset object as a data source in any query type.
You might get a workable UPDATE by first saving your SELECT statement as a named query, qryRS3. Then revise the UPDATE to INNER JOIN tblValueChain10 to qryRS3. But I'm uncertain whether Access would consider that query to be updatable; the GROUP BY might cause Access to treat it as not updatable. You'll have to test to see.

Answer 2

Although the goal you try to achieve using ADO Recordset in the way presented can't be done (as user #HansUp wrote), you could try the approach with updating your table tblValueChain10 using subquery taken from the rs3 recordset open call.
I hope that the following query :
UPDATE
tblValueChain10
INNER JOIN
(
SELECT
tblRisk05Holding.IDMacroProcesso01,
tblRisk05Holding.Level01Risk,
Max(tblRisk05Holding.ManualityStatus) AS MaxDiManualityStatus,
Max(tblRisk05Holding.RiskProbabilityStatus) AS MaxDiRiskProbabilityStatus,
Max(tblRisk05Holding.RiskExposureStatus) AS MaxDiRiskExposureStatus
FROM
tblRisk05Holding
GROUP BY
tblRisk05Holding.IDMacroProcesso01,
tblRisk05Holding.Level01Risk
) AS qry_Risk05Holding
ON (tblValueChain10.IDMacroProcesso01 = qry_Risk05Holding.IDMacroProcesso01)
SET
tblValueChain10.L1RiskManuality = qry_Risk05Holding.MaxDiManualityStatus,
tblValueChain10.L1RiskProbability = qry_Risk05Holding.MaxDiRiskProbabilityStatus,
tblValueChain10.L1RiskGravity = qry_Risk05Holding.MaxDiRiskExposureStatus
could help you solve your problem.
You should be able to run the above SQL with the following code:
Dim st_Sql3 As String
st_Sql3 = " UPDATE tblValueChain10 INNER JOIN ( "
st_Sql3 = st_Sql3 & " SELECT " _
& " tblRisk05Holding.IDMacroProcesso01, " _
& " tblRisk05Holding.Level01Risk, " _
& " Max(tblRisk05Holding.ManualityStatus) AS MaxDiManualityStatus, " _
& " Max(tblRisk05Holding.RiskProbabilityStatus) AS MaxDiRiskProbabilityStatus, " _
& " Max(tblRisk05Holding.RiskExposureStatus) AS MaxDiRiskExposureStatus "
st_Sql3 = st_Sql3 & " FROM " _
& " tblRisk05Holding " _
& " GROUP BY " _
& " tblRisk05Holding.IDMacroProcesso01, " _
& " tblRisk05Holding.Level01Risk "
st_Sql3 = st_Sql3 & " ) AS qry_Risk05Holding " _
& " ON (tblValueChain10.IDMacroProcesso01 = qry_Risk05Holding.IDMacroProcesso01) " _
& " SET " _
& " tblValueChain10.L1RiskManuality = qry_Risk05Holding.MaxDiManualityStatus, " _
& " tblValueChain10.L1RiskProbability = qry_Risk05Holding.MaxDiRiskProbabilityStatus, " _
& " tblValueChain10.L1RiskGravity = qry_Risk05Holding.MaxDiRiskExposureStatus "
Application.DoCmd.RunSQL (st_Sql3)
The query is being built-up in four stages because as far as I remember there is a restriction in VBA that there can't be too many line breaks _.
Please notice also that the JOIN used in the update query assumes that connecting two tables by IDMacroProcesso01 would ensure that the records are updated in the right way.
I can't check the solution in Acces right now but maybe it could somehow help you, at least a concept. If there were any errors, please write.

Answer 3

You need to loop through the recordset to iteratively update by each record:
Do While NOT rs3.EOF
st_Sql3 = "UPDATE tblValueChain10"_
& " INNER JOIN rs3 ON (tblValueChain10.IDMacroProcesso01 = tblRisk05Holding.IDMacroProcesso01)" _
& " SET L1RiskManuality = " & rs3.Fields(2) & ", L1RiskProbability = " & rs3.Fields(3) & "," _
& " L1RiskGravity = " & rs3.Fields(4) & ""
DoCmd.RunSQL (st_Sql3)
rs3.MoveNext
Loop
Also please note, your RunSQL () command is calling the incorrect SQL string.

Answer 4

If no err appears, then try to place this code:
Set rs3 = New ADODB.Recordset
in form_load, as in,
private sub Form_load()
Set rs3 = New ADODB.Recordset
End Sub
note: this sample is in vb6.0. that's what I can do. Besides, check the version in references