Solved

How to Docmd.CopyObject-- Pick last table with last date and time

Posted on 2010-09-10
12
475 Views
Last Modified: 2012-05-10
The first piece of code makes backup tables into a backup database. This adds the current date and time to the table names.

In the morning databases are copied.  

Then second piece of code restores tables into a copy of the morning database after it has crashed with some our backup tables.  My problem is I am trying automate the process.  If the table has no date and time added no problem restoring.  My problem is that the tables with time and date.  

Is there a way to say give that last table with date and time?




Option Compare Database
Option Explicit
Private Sub Form_Open(Cancel As Integer)
Me.TimerInterval = 300000
End Sub
Private Sub Form_Timer()
DoCmd.RunMacro "macro1"
Me.Requery
Me.TimeRecord.Requery
Forms!form2!Form3.Requery
Dim XXXXXXXXX As String
Dim sNow As Variant
     sNow = Format(Date, " mmddyy") & "_" & Format(Time, "hhmm")
Dim strDestinationMDB As String
Dim dbsData As DAO.Database
strDestinationMDB = "\\XXXXXXXX\XXXXXx\XXXXXXX.mdb"
Set dbsData = DBEngine.OpenDatabase(strDestinationMDB, _
False, False, ";pwd=XXXXXXX")
    
    DoCmd.SetWarnings False

  DoCmd.CopyObject "\\XXXXXXXX\XXXXXx\XXXXXXX\XXXXXXXX", "Table1" & sNow, acTable, "Table2"

End Sub
=============================================================================================
Option Compare Database
Option Explicit
Private Sub cmdSendTables_Click()
SendBackupTables
End Sub

Function SendBackupTables()

Dim strDestinationMDB As String
Dim dbsData As DAO.Database

Str DestinationMDB = "\\XXXXXXXXX\XXXXXXXX\XXXXXXXX\XXXXXXX\XXXXXXXXXX\ExportDB.mdb"
Set dbsData = DBEngine.OpenDatabase(strDestinationMDB, _
False, False, ";pwd=XXXXXXXX")

    DoCmd.SetWarnings False

DoCmd.CopyObject "\\XXXXXXXXX\XXXXXXXX\XXXXXXXX\XXXXXXX\XXXXXXXXXX\ExportDB.mdb", Table2", acTable, " Table2 090810_0808"

MsgBox "Tables have been Exported", vbExclamation + vbOKOnly, "Tables Exported"

End Function

Open in new window

0
Comment
Question by:ca1358
[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
  • 7
  • 5
12 Comments
 
LVL 14

Expert Comment

by:pteranodon72
ID: 33649042
ca1358,

The problem is that your current naming convention does not sort in date order across years.  If you change the way you create sNow to:

sNow = Format(Date, " yyyymmdd") & "_" & Format(Time, "hhnn")

the versions will sort alphabetically in chronological order through time. Then you can use

sPrefix = "YourTableBaseName"
sCrit = "Name Like '" & sPrefix & " ########_####' AND Type=1"
sLatestTable = DMax("Name", "MSysObjects", stCrit)

to get the latest saved table name.
Write back if you need to keep the current table names.

HTH,

pT72
0
 

Author Comment

by:ca1358
ID: 33649086
I need to keep the table name without the date.

Thank you.
0
 
LVL 14

Expert Comment

by:pteranodon72
ID: 33649138
I'm sorry, I know you want the tables in the morning database to have no date in their names, but I meant to say, are you committed to having the backup versions in:

TableName mmddyy_hhnn

or can you change the standard to

TableName mmddyyyy_hhnn?

0
Migrating Your Company's PCs

To keep pace with competitors, businesses must keep employees productive, and that means providing them with the latest technology. This document provides the tips and tricks you need to help you migrate an outdated PC fleet to new desktops, laptops, and tablets.

 
LVL 14

Expert Comment

by:pteranodon72
ID: 33649154
Sorry, meant in the last line:
TableName yyyymmdd_hhnn ?
0
 

Author Comment

by:ca1358
ID: 33649839
I have not  got this to work.

What is the syntax of CopyObject statement?


DoCmd.CopyObject "\\XXXXXXXXX\XXXXXXXX\XXXXXXXX\XXXXXXX\XXXXXXXXXX\ExportDB.mdb", Table2", acTable, " Table2 090810_0808"

0
 

Author Comment

by:ca1358
ID: 33649925
Here is what I have

Option Compare Database
Option Explicit

Private Sub Command0_Click()
SendBackupTables
End Sub

Function SendBackupTables()

Dim strDestinationMDB As String
Dim dbsData As DAO.Database
Dim sPrefix
Dim sCrit
Dim sLatestTable

strDestinationMDB = "\\XXXXXXXXXXX\XXXXXX\XXXXX\ExportDB.mdb"
Set dbsData = DBEngine.OpenDatabase(strDestinationMDB, _
False, False, ";pwd=bigblue")

 DoCmd.SetWarnings False

sPrefix = "Table1"
sCrit = "Name Like '" & sPrefix & " ########_####' AND Type=1"
sLatestTable = DMax("Name", "MSysObjects", sCrit)


DoCmd.CopyObject "\\XXXXXXXXXXX\XXXXXX\XXXXX\ExportDB.mdb", "Table1", acTable, "sLatestTable"

MsgBox "Tables have been Exported", vbExclamation + vbOKOnly, "Tables Exported"

End Function

Open in new window

0
 
LVL 14

Expert Comment

by:pteranodon72
ID: 33650085
Keeping your current table-naming system, you can use a query to create a date/time field that sorts the like-named tables.

Write a query named qryLatestTable with the SQL:

SELECT TOP 1 MSysObjects.Name, DateSerial(Mid([Name],Len([Name])-6,2), Mid([Name], Len([Name])-10,2), Mid([Name], Len([Name])-8,2)) + TimeSerial(Mid([Name], Len([Name])-3,2), Mid([Name], Len([Name])-1,2),0) AS TableDate
FROM MSysObjects
WHERE (((MSysObjects.Name) Like 'Table2 ######_####') AND ((MSysObjects.Type)=1))
ORDER BY DateSerial(Mid([Name],Len([Name])-6,2),Mid([Name],Len([Name])-10,2),Mid([Name],Len([Name])-8,2))+TimeSerial(Mid([Name],Len([Name])-3,2),Mid([Name],Len([Name])-1,2),0) DESC;

Then, replace line 43 in your code above with:

DoCmd.CopyObject "\\XX\X\X\X\X\ExportDB.mdb", "Table2", acTable, DLookup("Name", "qryLatestTable")


If you change the format of sNow to yyyymmdd_hhnn, you can skip the query and use

DoCmd.CopyObject "\\XX\X\X\X\X\ExportDB.mdb", "Table2", acTable, DMax("[Name]", "MSysObjects", "Type=1 AND [Name] Like 'Table2 ########_####')

HTH,

pT72
0
 
LVL 14

Expert Comment

by:pteranodon72
ID: 33650402
Remove the quotes around sLatestTable in ID:33649925, line 23.

The syntax is:
DoCmd.CopyObject DestinationDatabase, NewName, SourceObjectType, SourceObjectName

Can you go through the code step-by-step and make sure the Dlookup is finding the table?

You can also try :

Docmd.TransferDatabase acExport, "Microsoft Access", DatabaseName, acTable, Source, Destination

as shown on
http://accessblog.net/2006/04/how-to-export-objects-to-secured.html
0
 

Author Comment

by:ca1358
ID: 33650678
This seams to work.

I changed the formatting to copy over to this.

TableName yyyymmdd_hhnn

Please look at it and tell me if you think it looks ok.
Option Compare Database
Option Explicit
Private Sub cmdSendTables_Click()
SendBackupTables
End Sub

Function SendBackupTables()

Dim strDestinationMDB As String
Dim dbsData As DAO.Database

strDestinationMDB = "\\XXXXXXX\XXXXXXXXXX\XXXX\XXXXXX\XXXXX\ExportDB.mdb"
Set dbsData = DBEngine.OpenDatabase(strDestinationMDB, _
False, False, ";pwd=XXXXXX")

    DoCmd.SetWarnings False

DoCmd.CopyObject "\\XXXXXXX\XXXXXXXXXX\XXXX\XXXXXX\XXXXX\ExportDB.mdb", "YourTableNameWithoutDate", acTable, DMax("[Name]", "MSysObjects", "Type=1 AND [Name] Like ' YourTableNameWithoutDate ########_####'")

MsgBox "Tables have been Exported", vbExclamation + vbOKOnly, "Tables Exported"

End Function

Open in new window

0
 
LVL 14

Accepted Solution

by:
pteranodon72 earned 500 total points
ID: 33650778
ca1358,
That looks good except for a single space on line 18 between the first apostrophe and YourTableNameWithoutDate. Remove that sucker and you are good to go!

pT72
0
 

Author Closing Comment

by:ca1358
ID: 33650789
Thank you for all your work!!!
0
 
LVL 14

Expert Comment

by:pteranodon72
ID: 33650819
Oh, and add these lines after the MsgBox:

dbsData.Close
Set dbsData = Nothing

to close and de-reference the database you previously opened with a password. The code will run without it, but it's better practice to close anything you opened and Set any objects to Nothing.

pT72

0

Featured Post

Independent Software Vendors: 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!

Question has a verified solution.

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

Access developers frequently have requirements to interact with Excel (import from or output to) in their applications.  You might be able to accomplish this with the TransferSpreadsheet and OutputTo methods, but in this series of articles I will di…
Traditionally, the method to display pictures in Access forms and reports is to first download them from URLs to a folder, record the path in a table and then let the form or report pull the pictures from that folder. But why not let Windows retr…
Learn how to number pages in an Access report over each group. Activate two pass printing by referencing the pages property: Add code to the Page Footers OnFormat event to capture the pages as there occur for each group. Use the pages property to …
With Microsoft Access, learn how to specify relationships between tables and set various options on the relationship. Add the tables: Create the relationship: Decide if you’re going to set referential integrity: Decide if you want cascade upda…

726 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