11g Client - inconsistencies to the 16th decimal

In the clients of TOAD, SQLPlus and ODBC numbers returned by a query are correct (max 3 digits)
In Discoverer & according to a report, the numbers are off to the 16th decimal...
FOR EXAMPLE:
7.081 becomes 7.0810000000000004
7,090 becomes 7.0999999999999994 (which is weird because the District does not work)
7,200 becomes 7.2000000000000002

No idea what would cause this?
How can I query from SQLPlus (or TOAD) to confirm or not those decimal extended actually exist in the table?

Alan3 wrote:
Maybe I should have added this little tidbit...

Please be as detailed as possible (it is possible). See queries etc. - use copy and paste.

The particular table in question is an interface table which is in place for 4 years and more.
The columns in question are of NUMBER data type.
We just changed the PC that runs this interface to Win7 with a client 11g.

Describe the interface. For example, in what language is it written program?

Now we see the decimals extended with the discoverer (on any PC) and the report of the interface (an old report built from Developer 6) for example, but not from SQL, etc...

How changing customer a pc linked to the Discoverer and reports? The database server has been improved also? (the full version of select * version of $ v ;))

You see the same 'old' data change (of the switch).

I want to know if there is a setting in SQLPlus or the DB client that limits the display of decimal places I can change to determine if the extent of decimal numbers in fact appears... (they should not be there at all)

Sqlplus and db can affect the outcome, for example

SQL> desc test
 Name                                      Null?    Type
 ----------------------------------------- -------- -------------
 A                                                  NUMBER
 B                                                  NUMBER(38,5)

SQL> show numw
numwidth 10
SQL>
SQL> select * from test;

         A          B
---------- ----------
     12345      12345
 123456789  123456789
    123,45     123,45
123,456789  123,45679
     1,234      1,234
1,23456789    1,23457

6 rows selected.

Values has been inserted for the two columns to test. With scale = 5 for its data type, the values of B are rounded (4th and 6th rank).

SQL> set numw 5
SQL> select * from test;

    A     B
----- -----
12345 12345
##### #####
123,5 123,5
123,5 123,5
1,234 1,234
1,235 1,235

6 rows selected.

The numLargeur setting affects sqlplus formatting.

Published by: orafad on January 5, 2011 21:44

Tags: Database

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