Pedro Janssen
pedro at plex.nl
Tue Apr 8 06:17:23 CDT 2003
MessageHello Charlotte,
i want truly round numbers with 1 precision.
Pedro Janssen
----- Original Message -----
From: Charlotte Foust
To: accessd at databaseadvisors.com
Sent: Monday, April 07, 2003 7:41 PM
Subject: RE: [AccessD] roundup - decimal places
You're going to have to explain whether you want to truly round numbers or just display them that way. The Decimal places setting addresses the display, not the precision.
Charlotte Foust
-----Original Message-----
From: Pedro Janssen [mailto:pedro at plex.nl]
Sent: Monday, April 07, 2003 9:25 AM
To: accessd at databaseadvisors.com
Subject: Re: [AccessD] roundup - decimal places
Hello Charles,
when i type 5,1 i type 5,1 and not .
How does a computer changes 5,1 into 5,11415899 although i type 5,1.
What is the use of decimal places:1, with field size: single, when the pc makes a lott of decimal places from it. Then this property better wasn't available when using numbers (not currency).
Is there a way to roundup the numbers to 1decimal place without using currency.
Pedro Janssen
----- Original Message -----
From: Wortz, Charles
To: accessd at databaseadvisors.com
Sent: Monday, April 07, 2003 5:42 PM
Subject: RE: [AccessD] roundup - decimal places
Pedro,
Remember, you are working on a binary computer. Thus decimal numbers must be approximated as the sum of powers of two. For integer numbers these approximations are exact representations. For floating point numbers, these approximations are just that - approximations. None of your floating point numbers are stored with just one digit to the right of the decimal point, they are only displayed to you as such.
If you cannot learn to live with floating point numbers, then convert them to the currency datatype. The currency datatype will meet many of you computational needs.
Charles Wortz
Software Development Division
Texas Education Agency
1701 N. Congress Ave
Austin, TX 78701-1494
512-463-9493
CWortz at tea.state.tx.us
-----Original Message-----
From: Pedro Janssen [mailto:pedro at plex.nl]
Sent: Monday 2003 Apr 07 10:30
To: AccessD at databaseadvisors.com
Subject: [AccessD] roundup - decimal places
Hello Group,
i have a tableA with 5 fields (field size: single, decimal places:1)
Not all fields have values.
I want the difference from al those field, so i added a field diff.
I made an update query with the following sql:
UPDATE TableA SET TableA.[diff] = 100-Nz([field1],0)-Nz([[field2],0)- etc. etc.;
The result that i get in field diff gives many records with more then 1 decimal places.
For example: When i have a record which contains values like 5,1 and 94,9 (all values are typed in this way and are not calculated) i get as result 0,11176548
or a record that contains values like 20,5 and 20,5 i get as result 59,997854.
Some result do have only one decimal place.
How is this possible?
TIA
Pedro Janssen
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