?
Solved

create Union Query problems

Posted on 2010-09-17
12
Medium Priority
?
536 Views
Last Modified: 2012-05-10
Dear Experts,

I have a piece of code which used to work, but not longer does.  What the code does is merge (Union All) 2 queries together.  

Basically there is a table with the SQL string stored in it with the following fields:

SearchID (Autonumber)
SearchName (Text)
SearchTime (Date/Time)
SearchString (Memo)
Merge (Yes/No)

The search string field basically contains the sql for the query (without the; at the end) – e.g.

SELECT [Tbl-Contacts].* FROM [Tbl-Contacts] WHERE ((([Tbl-Contacts].SumBoard) Is Not Null) AND (([Tbl-Contacts].SumFinance) Is Not Null) AND (([Tbl-Contacts].SumHR) Is Not Null) AND (([Tbl-Contacts].SumRD) Is Not Null)) AND (([Tbl-Contacts].SumReg) Is Not Null) AND (([Tbl-Contacts].SumSales) Is Not Null) AND (([Tbl-Contacts].State)='Delaware')

The attached code should go through the table picking up the searchstring where Merge = -1 and join the statements up with a union all and then add that as a new record in the table, the result would look something like this …

SELECT [Tbl-Contacts].* FROM [Tbl-Contacts] WHERE ((([Tbl-Contacts].SumBoard) Is Not Null) AND (([Tbl-Contacts].SumFinance) Is Not Null) AND (([Tbl-Contacts].SumHR) Is Not Null) AND (([Tbl-Contacts].SumRD) Is Not Null)) AND (([Tbl-Contacts].SumReg) Is Not Null) AND (([Tbl-Contacts].SumSales) Is Not Null) AND (([Tbl-Contacts].State)='Delaware')
Union All
SELECT [Tbl-Contacts].* FROM [Tbl-Contacts] WHERE ((([Tbl-Contacts].SumBoard)=0) AND (([Tbl-Contacts].SumFinance) Is Not Null) AND (([Tbl-Contacts].SumHR) Is Not Null) AND (([Tbl-Contacts].SumRD) Is Not Null)) AND (([Tbl-Contacts].SumReg) Is Not Null) AND (([Tbl-Contacts].SumSales) Is Not Null) AND ((([Tbl-Contacts].Firm)  Like '*GSK*'))

However result that is produced doesn’t include the first record (however many records are selected for merging

Can anybody help?

Private Sub Merge_Click()
  
    
    ' ********* Check Bit  *********
If Len(Me!TextName & "") = 0 Then
       MsgBox "You must add a Name", vbExclamation
        Cancel = True
        Exit Sub
    End If
    
DoCmd.Save
Dim rs As DAO.Recordset, uSQL As String
Set rs = CurrentDb.OpenRecordset("select * from [Tbl-SavedSearches] where merge=-1")
uSQL = ""
Do Until rs.EOF
uSQL = uSQL & " Union All " & rs("SearchString")


rs.MoveNext
Loop

rs.Close

uSQL = Mid(uSQL, 11)
Debug.Print uSQL
   
    
' ********* Save Bit  *********
Dim rs1 As DAO.Recordset
Set rs1 = CurrentDb.OpenRecordset("tbl-SavedSearches")
rs1.AddNew
rs1!SearchName = Me.[TextName]
rs1!SearchTime = Now()
rs1!SearchString = uSQL
rs1.Update
rs1.Close

  
    Dim stDocName As String
    Dim stLinkCriteria As String

    stDocName = "Frm-SavedSearches"
    DoCmd.Close acForm, "Frm-SavedSearches"
    DoCmd.OpenForm stDocName, , , stLinkCriteria
    DoCmd.Close acForm, "Frm-Merge-Searches"

End Sub

Open in new window

0
Comment
Question by:correlate
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 5
  • 3
  • 2
  • +2
12 Comments
 
LVL 120

Expert Comment

by:Rey Obrero (Capricorn1)
ID: 33701564
try

rs.movefirst    'ADD this line before doing the loop

Do Until rs.EOF
0
 
LVL 12

Expert Comment

by:Paul_Harris_Fusion
ID: 33701626
If I understand you correctly, it is the first SQL statement that is missing not the first record returned from the entire statement.

Try replacing the inner loop with this:

Dim rs As DAO.Recordset, uSQL As String
Set rs = CurrentDb.OpenRecordset("select * from [Tbl-SavedSearches] where merge=-1")
uSQL = ""

If not rs.BOF then
   rs.MoveFirst

   Do While not rs.EOF
        uSQL = uSQL & " Union All " & rs("SearchString")
       rs.MoveNext
   Loop

End if


0
 
LVL 31

Expert Comment

by:Helen Feddema
ID: 33701666
Also, you might want to replace the IsNull function with Nz, and check for Nz([FieldName]) <> 0 or <> "" (depending on whether the field is text or numeric), since often one wants to exclude blanks or zeroes as well as Nulls.
0
Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 

Author Comment

by:correlate
ID: 33701923
Hi Capricorn 1 & Paul Harris,

I tried both, but alas I'm getting the same result, its still only only picking up on the 1,

here I'm attaching what I am using as Paul's code, I tried, I'll attach Capricorn's version in the next comment
Private Sub Merge_Click()
  
    
    ' ********* Check Bit  *********
If Len(Me!TextName & "") = 0 Then
       MsgBox "You must add a Name", vbExclamation
        Cancel = True
        Exit Sub
    End If
    
DoCmd.Save

Dim rs As DAO.Recordset, uSQL As String
Set rs = CurrentDb.OpenRecordset("select * from [Tbl-SavedSearches] where merge=-1")
uSQL = ""

If Not rs.BOF Then
   rs.MoveFirst

   Do While Not rs.EOF
        uSQL = uSQL & " Union All " & rs("SearchString")
       rs.MoveNext
   Loop

End If

'uSQL = Mid(uSQL, 11)
'Debug.Print uSQL
   
    
' ********* Save Bit  *********
Dim rs1 As DAO.Recordset
Set rs1 = CurrentDb.OpenRecordset("tbl-SavedSearches")
rs1.AddNew
rs1!SearchName = Me.[TextName]
rs1!SearchTime = Now()
rs1!SearchString = uSQL
rs1.Update
rs1.Close

  
    Dim stDocName As String
    Dim stLinkCriteria As String

    stDocName = "Frm-SavedSearches"
    DoCmd.Close acForm, "Frm-SavedSearches"
    DoCmd.OpenForm stDocName, , , stLinkCriteria
    DoCmd.Close acForm, "Frm-Merge-Searches"

End Sub

Open in new window

0
 

Author Comment

by:correlate
ID: 33701948
Capricorn's code...
Private Sub Merge_Click()
  
    
    ' ********* Check Bit  *********
If Len(Me!TextName & "") = 0 Then
       MsgBox "You must add a Name", vbExclamation
        Cancel = True
        Exit Sub
    End If
    
DoCmd.Save
Dim rs As DAO.Recordset, uSQL As String
Set rs = CurrentDb.OpenRecordset("select * from [Tbl-SavedSearches] where merge=-1")
uSQL = ""
rs.MoveFirst
Do Until rs.EOF
uSQL = uSQL & " Union All " & rs("SearchString")


rs.MoveNext
Loop

rs.Close

uSQL = Mid(uSQL, 11)
Debug.Print uSQL
   
    
' ********* Save Bit  *********
Dim rs1 As DAO.Recordset
Set rs1 = CurrentDb.OpenRecordset("tbl-SavedSearches")
rs1.AddNew
rs1!SearchName = Me.[TextName]
rs1!SearchTime = Now()
rs1!SearchString = uSQL
rs1.Update
rs1.Close

  
    Dim stDocName As String
    Dim stLinkCriteria As String

    stDocName = "Frm-SavedSearches"
    DoCmd.Close acForm, "Frm-SavedSearches"
    DoCmd.OpenForm stDocName, , , stLinkCriteria
    DoCmd.Close acForm, "Frm-Merge-Searches"

End Sub

Open in new window

0
 
LVL 120

Accepted Solution

by:
Rey Obrero (Capricorn1) earned 2000 total points
ID: 33701986
try this


post the message box content
Private Sub Merge_Click()
  
    
    ' ********* Check Bit  *********
If Len(Me!TextName & "") = 0 Then
       MsgBox "You must add a Name", vbExclamation
        Cancel = True
        Exit Sub
    End If
    
DoCmd.Save
Dim rs As DAO.Recordset, uSQL As String
Set rs = CurrentDb.OpenRecordset("select * from [Tbl-SavedSearches] where merge=-1")
uSQL = ""

rs.movelast
msgbox rs.recordcount & " records found"

rs.MoveFirst
Do Until rs.EOF
uSQL = uSQL & " Union All " & rs("SearchString")


rs.MoveNext
Loop

rs.Close

uSQL = Mid(uSQL, 11)
Debug.Print uSQL
   
    
' ********* Save Bit  *********
Dim rs1 As DAO.Recordset
Set rs1 = CurrentDb.OpenRecordset("tbl-SavedSearches")
rs1.AddNew
rs1!SearchName = Me.[TextName]
rs1!SearchTime = Now()
rs1!SearchString = uSQL
rs1.Update
rs1.Close

  
    Dim stDocName As String
    Dim stLinkCriteria As String

    stDocName = "Frm-SavedSearches"
    DoCmd.Close acForm, "Frm-SavedSearches"
    DoCmd.OpenForm stDocName, , , stLinkCriteria
    DoCmd.Close acForm, "Frm-Merge-Searches"

End Sub

Open in new window

0
 
LVL 48

Expert Comment

by:Dale Fye
ID: 33702026
What are you attempting to achieve with the line:

uSQL = Mid(uSQL, 11)

0
 

Author Comment

by:correlate
ID: 33702133
Hi Capricorn1

Message = 1 records found
0
 
LVL 120

Expert Comment

by:Rey Obrero (Capricorn1)
ID: 33702149
that is the reason, why you are only getting one record
0
 

Author Comment

by:correlate
ID: 33702154
Hi fyed

This bit I believe cuts off the first 11 characters in the string otherwise the string would start " Union All SELECT..." rather than SELECT
0
 
LVL 48

Expert Comment

by:Dale Fye
ID: 33702164
Duh!  brain cramp.
0
 

Author Closing Comment

by:correlate
ID: 33702384
Hi Capricorn1 - thanks for that - works a treat now - your comment made me check other codes in there and what I found was there was another RS! which ran on Open form that cleared out the ticks,
0

Featured Post

Will your db performance match your db growth?

In Percona’s white paper “Performance at Scale: Keeping Your Database on Its Toes,” we take a high-level approach to what you need to think about when planning for database scalability.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

If you need a simple but flexible process for maintaining an audit trail of who created, edited, or deleted data from a table, or multiple tables, and you can do all of your work from within a form, this simple Audit Log will work for you.
This article shows how to get a list of available printers for display in a drop-down list, and then to use the selected printer to print an Access report or a Word document filled with Access data, using different syntax as needed for working with …
In Microsoft Access, learn different ways of passing a string value within a string argument. Also learn what a “Type Mis-match” error is about.
Access reports are powerful and flexible. Learn how to create a query and then a grouped report using the wizard. Modify the report design after the wizard is done to make it look better. There will be another video to explain how to put the final p…
Suggested Courses

762 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question