Learn Microsoft Access Advanced Programming Techniques, Tips and Tricks.

Combining Active and Backup Database Records in Union Query


Microsoft Access database can be a maximum of 2GB in size. We can back up old Records (like previous year transactions) into a Backup database safely for later use, if need arises. After the safe backup these transactions, they can be deleted from the active database and Run Compact & Repair Utility to optimize the database performance in day-to-day activities.

There are times that we need the old data for analysis purposes, like next year budgeting, sales target setting and so on. At this point we will need old records to combine with the existing data of the active master-table, in the current database, to do various analysis runs.


The Union Query Solution.

We can merge records of both active table and records of backup table (with the same name) in a Union Query.

A simple example is given below:

SELECT Export.* 
FROM Export
UNION ALL SELECT Export.*
FROM Export IN 'G:\NEW FOLDER\DB1.MDB';

From the above example you can see that the name of the table Export in active database and backup database(DB1.MDB) are same. No need to link the table to the active database to access the data from the backup database.

Share:

ROUNDUP Function of Excel in Ms-Access

Introduction.

Microsoft Access doesn't have this Function built-in. I have made an attempt to write the code for this function and you may use it at your own risk. Before going to the code take a look at the usage examples of this function in Excel.


ROUNDUP() function in Microsoft Excel.

The Rules.

Rounds a number up, away from 0 (zero).

Syntax: ROUNDUP(number,num_digits) Number is any real number that you want rounded up.

Num_digits is the number of digits to which you want to round number.

Remarks ROUNDUP behaves like ROUND, except that it always rounds a number up.

If num_digits is greater than 0 (zero), then number is rounded up to the specified number of decimal places.

If num_digits is 0, then number is rounded up to the nearest integer.

If num_digits is less than 0, then number is rounded up to the left of the decimal point.

Examples: 

=ROUNDUP(3.2,0) Rounds 3.2 up to zero decimal places (4)

=ROUNDUP(76.9,0) Rounds 76.9 up to zero decimal places (77)

=ROUNDUP(3.14159, 3) Rounds 3.14159 up to three decimal places (3.142)

=ROUNDUP(-3.14159, 1) Rounds -3.14159 up to one decimal place (-3.2)

=ROUNDUP(31415.92654, -2) Rounds 31415.92654 up to 2 decimal places to the left of the decimal (31500)

Courtesy: Microsoft Excel Help Documents.

Copy and Paste the following VBA Code into a Standard Module of your Database and try it out. The examples given above have been successfully passed on my testing of the code.

The ROUNDUP() Function.

Public Function ROUNDUP(ByVal dblNum As Double, ByVal intprecision As Integer) As Double
'-------------------------------------------------
'ROUNDUP() Function of Excel Redefined in MS-Access
'Author: apr pillai
'Date  : June 2016
'Rights: All Rights Reserved by www.msaccesstips.com
'-------------------------------------------------
On Error GoTo ROUNDUP_Err
Dim sign As Integer
    sign = Sgn(dblNum)
    dblNum = Abs(dblNum)
    dblNum = dblNum * 10 ^ intprecision
ROUNDUP = (Int(dblNum + (1 - IIf((dblNum - Int(dblNum)) <> 0, (dblNum - Int(dblNum)), 1))) / 10 ^ intprecision) * sign

ROUNDUP_Exit:
Exit Function

ROUNDUP_Err:
MsgBox Err & ": " & Err.Description, , "ROUNDUP()"
Resume ROUNDUP_Exit
End Function

suggestions for improvement of the above VBA Code are welcome.

Share:

Translate



PageRank
Subscribe in a reader
Your email address:

Delivered by FeedBurner

http://clicky.com/101199826
Blog Directory Visit blogadda.com to discover Indian blogs

Search

Popular Posts

Search This Blog

Blog Archive

Powered by Blogger.

Follow by Email

Labels

Forms Functions How Tos MS-Access Security Reports Class Module msaccess forms Animations msaccess animation Utilities msaccess controls Access and Internet MS-Access Scurity MS-Access and Internet Array External Links Queries msaccess reports msaccess tips Accesstips Downloads Objects Property Collection Object Event Menus and Toolbars Controls MsaccessLinks Process Controls WithEvents Art Work msaccess How Tos Combo Boxes Graph Charts List Boxes VBA msaccessQuery Command Buttons Dictionary Object Form Report Calculation Command Button Data Emails and Alerts Query RaiseEvent Custom Functions Custom Wizards DOS Commands Data Type Object Reference ms-access functions msaccess functions msaccess graphs msaccess reporttricks Item msaccessprocess security advanced Access Security Add Auto-Number Field Type Fields Form Instances Key Macros Menus SubForm Top Values Variables msaccess email msaccess menus progressmeter Access2007 Copy Excel Expression Join Methods Microsoft Numbering System Records Recordset Security Split Table Time Difference Utility Workgroup Wrapper Classes database function ms-access msaccess wizards reference text tutorial vba code Access2003 Accounting Year Action Animation Attachment Binary Numbers Bookmarks Budgeting ChDir Color Palette Conditional Formatting Data Filtering Defining Pages Diagram Disk Dynamic Lookup Error Handler Export External Filter Formatting Groups Hexadecimal Numbers Import Labels List Logo Macro Mail Merge Main Form Memo Monitoring Octal Numbers Operating System Paste Primary-Key Product Rank Reading Remove Rich Text Sequence SetFocus Summary Tab-Page Tables Union Query User Users Water-Mark Word automatically commands hyperlinks iSeries Date iif msaccess msaccess alerts pdf files restore switch toolbar updating upload

Featured Post

Opening Access Objects from Desktop

Frequently Used Methods. Set the Form Name in Display Form Option of Current Database in Access Options . BIG DEAL!, this is the first t...

Labels

Blog Archive

Recent Posts