Essentially I would like to run a simple select query that gets the sum of a column of values and prints the results in the immediate window (debugger).
The following is an example of my query:
SELECT Sum([Quantity]*[Total]) As Total FROM MyTable
The following is my code so far:
Dim strSQL As String
strSQL = "SELECT Sum([Quantity]*[Total]) As Total FROM MyTable"
DoCmd.RunSQL strSQL
Debug.Print strSQL
How can I execute that query and grab the results of the SUM to Print?
SELECT queries are not 'run', they are opened. Run is for action SQL - DELETE, INSERT, UPDATE.
Options:
Open recordset object and read value from calculated field.
Dim rs as DAO.Recordset
Set rs = CurrentDb.OpenRecordset("SELECT Sum([Quantity]*[Total]) As Tot FROM MyTable"
Debug.Print rs!Tot
Domain aggregate function
Debug.Print DSum("Quantity*Total", "MyTable")
Related
In MS Access using VBA trying to subtract a calculated value (time between dates) from a total amount of time in another table.
The query holding the total amount of time is QryScsBatchHandler the field I want to subtract the value from is FreezerLifeUsed and the match condtion is BatchID
The query holding the value I want to subtract is QrySCSMaterialFreezerLog or the form is Frm_MaterialFreezerLog.. the value is AccumilatedTime and the Match condition is Batch ID
Private Sub BkInFrzr_Click()
Dim db As DAO.Database
Dim rst As DAO.Recordset
Dim strSQL As String
Set db = CurrentDb()
strSQL = "SELECT FreezerLifeUsed FROM QryScsBatchHandler WHERE [BatchID] = BatchID"
Set rst = db.OpenRecordset(strSQL, dbOpenDynaset)
With rst
.MoveFirst
.Edit
FreezerLifeUsed = -AccumilatedTime
.Update
End With
End Sub
I can’t seem to get this simple subtraction to work… any suggestions on what’s not right?
Any help will be greatly appreciated..
At least 3 issues with code.
concatenate reference to form field/control for dynamic criteria in SQL:
strSQL = "SELECT FreezerLifeUsed FROM QryScsBatchHandler WHERE [BatchID] = " & Me.BatchID
The VBA needs to use dot or bang when referencing controls or fields and qualifying with prefix is advised:
!FreezerLifeUsed
Me.AccumilatedTime
Nothing is subtracted from anything, so consider:
!FreezerLifeUsed = !FreezerLifeUsed - Me.AccumilatedTime
However, if query is expected to return only one record, don't bother with loop. Also, instead of opening a recordset, an UPDATE action would work.
I have a form with a button that calls and filters a couple of union queries with about 40 SELECT queries total in between them. It then displays the data in a report. Each SELECT query in the Union query collects records from multiple unique tables in the database. I recently had to add a couple more SELECT queries into the union query to grab records from new tables which is when I got the runtime error. It was opening the report fine before I added these SELECT queries so im under the assumption is there are too many SELECT queries in the UNION query. To resolve this issue, do I simply not use a UNION query and find an alternative way to combine records? or is it something in the VBA code that needs adjustment?
Here is my code
Private Sub Command189_Click()
DoCmd.SetWarnings False
DoCmd.Close acReport, "Operator Daily Review"
Dim db As DAO.Database
Dim qdf As DAO.QueryDef
Dim varItem As Variant
Dim strCriteria As String
Dim strSQL As String
Set db = CurrentDb()
Set qdf = db.QueryDefs("Productivity_WeeklyFinal")
Set qdf2 = db.QueryDefs("qFiller_Names")
strSQL = "SELECT Info_ME_Employees.ID, gs_1_week_finalUnion.SampleID,
gs_1_week_finalUnion.Operator, Format$([TestDate],'m/dd/yyyy') AS Test_Date,
gs_1_week_finalUnion.Test FROM Info_ME_Employees INNER JOIN gs_1_week_finalUnion ON
Info_ME_Employees.Full_Name = gs_1_week_finalUnion.Operator" & _
" WHERE Info_ME_Employees.ID IN (4,5,6,7)AND gs_1_week_finalUnion.TestDate Between (Date()-7-
Weekday(Date(),2)) And (Date()-Weekday(Date(),2)-1) " & _
" ORDER BY gs_1_week_finalUnion.Operator"
strSQL2 = "SELECT Info_ME_Employees.ID, Info_ME_Employees.Full_Name FROM Info_ME_Employees" & _
" WHERE Info_ME_Employees.ID IN (4,5,6,7)"
qdf.SQL = strSQL
qdf2.SQL = strSQL2
DoCmd.OpenReport "Operator Daily Review", acViewReport
Set db = Nothing
Set qdf = Nothing
End Sub
I think that there is a limit of tables that can be included in a UNION query - possibly 32. Therefore your options are:
Create several UNION queries, and then UNION them all together as the final step;
Insert the data into a temp table using each individual part of the union query.
Additionally, there may be some way that your database could be re-designed, as it is quite unusual to have to have some many unions needed.
Regards,
Actually, the statement for this "error" is incorrect!
“Cannot open any more databases.” What microsoft should have said here is that no more links to a database can be opened. That is why adding more UNIONs caused this error. Because each separate reference to a link to an object (table or query) causes another link (microsoft uses the term "database") to be opened.
I try to create a query in MS Access (VBA) where I can select only the current dataset (by ID) shown in the query form. Somehow my query does not work .. do you have a suggestion for me?
strSQL = "SELECT * FROM query1 WHERE ID = [Forms]![query1]![ID]"
Set rs = CurrentDb.OpenRecordset(strSQL)
You cant include your variables in your string. Try it like this instead.
strSQL = "SELECT * FROM query1 WHERE ID =" & [Forms]![query1]![ID]
I am trying to run an Update Query in VBA and am at a lost as to what I'm supposed to write for the code. I'm running a query to find the most recent date from a table. That query works fine. Now I want to run an update query to update another table's date field to equal to the date that was queried. Here is what I have:
Dim Date1 As Date
Dim newdate1
'selects datadate 1
Date1 = CurrentDb.OpenRecordset("Select Max(Date1_Event) from TBL_Event WHERE ID = '" & [Forms]![FRM_Main]![ID] & "'")(0)
'update datadate 1
newdate1 = CurrentDb.OpenRecordset("Update Tbl_Name set CollectionDate = DataDate1 WHERE PID = '" & [Forms]![FRM_Main]![ID] & "'")(0)
Is there a way to run an update query like this? Thank you.
Action queries (DELETE, UPDATE, INSERT INTO) are to be executed (CurrentDb.Execute) while SELECT queries are to be opened as recordsets (CurrentDb.OpenRecordset).
Additionally, consider using parameterization to avoid any need of quote enclosure or string concatenation in query. And here the max date is calculated with domain aggregate, DMax(), instead of opening another query.
Dim strSQL As String
Dim qdef As Querydef
' PREPARE SQL STATEMENT
strSQL = "PARAMETERS [MaxDateParam] Date, [FormIDParam] Long;" _
& "UPDATE Tbl_Name SET CollectionDate = [MaxDateParam]" _
& " WHERE PID = [FormIDParam];"
' BUILD TEMP QUERY
Set qdef = CurrentDb.CreateQueryDef("", strSQL)
' BIND PARAMETERS
qdef!MaxDateParam = DMax("Date1_Event", "TBL_Event", "ID=" & [Forms]![FRM_Main]![ID])
qdef!FormIDParam = [Forms]![FRM_Main]![ID]
' EXECUTE ACTION
qdef.Execute dbFailOnError
Set qdef = Nothing
Though above may look unusual and slightly more lines. Don't be intimidated and run for the easy 1-2 lines. Parameterization is a programming industry best practice not just in VBA but across all general purpose languages that run dynamic SQL queries using values from user input.
I have a table called say Employee_id. I want to loop the table data and for each row of the table data run some other query where the inputs will be the values from the row of employee_id.
Is it possible to write something like this in Access?
Dim rsEmployees As DAO.Recordset
Dim stringName As String
Dim strSQL As String
Dim strSQL1 As String
strSQL = "SELECT Employee_Name..., etc FROM Employee_id "
Set rsEmployees = CurrentDb.OpenRecordset(strSQL)
rsEmployees.MoveFirst
Do While Not rsEmployees.EOF
stringName = rsEmployees!Employee_Name
strSQL1 = "What ever your query is"
Do.Cmd.RunSQL (strSQL)
rsEmployes.MoveNext
Loop
End Sub
Set 1: Create a query that selects every record from the Employee_ID table
Set 2: While Loop through the recordset of the above Query
Set 3: Use rsEmployess!ColumnName to access each record field
Set 4: Use the above string in your query