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Focal Point    Focal Point Forums  Hop To Forum Categories  WebFOCUS/FOCUS Forum on Focal Point     NULL VALUES - SILLY QUESTION

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NULL VALUES - SILLY QUESTION
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arvind
Platinum Member
posted
hi friends ,

I have a very basic question. Here is the situation .

Our reports are driven by SQLs which fetch the data. Some of the columns in SQL have "NULL" values.

Now , when the column containing null values is used as a filter in the form of a listbox.

There are blank values in the listbox which indicate that this column contains null values.

What i want is to replace this blank value with a more user friendly message like "None" ..

I tried doing this using Define statement,

LVL_1_BUS_CAPBL_N/A50 = IF LVL_1_BUS_CAPBL_N IS MISSING THEN 'NONE' ELSE LVL_1_BUS_CAPBL_N;

But this was not getting reflected in the listbox. "None" was not showing in the listbox.
SET NULL = ON I think works for a different hold format.


Please advice.


WebFOCUS 714
Windows XP
Output: HTML,PDF,Excel
 
Posts: 189 | Registered: January 30, 2008Report This Post
GamP
Virtuoso
posted Hide Post
Arvind,

Use a COMPUTE in stead.
I got this to work in the following example:
SET ALL=ON
SET NODATA=NODATA

JOIN EMP_ID IN EMPLOYEE TO ALL EMP_ID IN EDUCFILE AS JA

TABLE FILE EMPLOYEE
PRINT COURSE_NAME
      COMPUTE EMPCN/A40 MISSING OFF = IF COURSE_NAME EQ '' THEN 'NOTHING' ELSE COURSE_NAME;
BY EID
END

The field that is missing gets 'NODATA', but the corresponding COMPUTE show 'NOTHING'.

Hope this helps ...


GamP
- Using AS 8.2.01 on Windows 10 - IE11.
in Focus since 1988
 
Posts: 1961 | Location: Netherlands | Registered: September 25, 2007Report This Post
arvind
Platinum Member
posted Hide Post
hi gamp,

Thanks a ton for your reply ,

But mate , that column is used as a filter in the form of a listbox , and this word "NONE" for null value is not getting reflected in the listbox.

Do i have to tweak the code further so that it gets reflected in the listbox??

thank you very much


WebFOCUS 714
Windows XP
Output: HTML,PDF,Excel
 
Posts: 189 | Registered: January 30, 2008Report This Post
GamP
Virtuoso
posted Hide Post
Maybe it helps if you post the code that you use to populate the listbox.
Now we're just guessing around a bit, and that is not speeding things up.


GamP
- Using AS 8.2.01 on Windows 10 - IE11.
in Focus since 1988
 
Posts: 1961 | Location: Netherlands | Registered: September 25, 2007Report This Post
TexasStingray
Master
posted Hide Post
arvind

How are you populating the list box? from a data source or from a procedure. If a data source then that will not work. If a procedure then it should be somethign like this
DEFINE FILE ...
FILTER/A50 = IF LVL_1_BUS_CAPBL_N IS MISSING THEN 'NONE' ELSE LVL_1_BUS_CAPBL_N;
END
TABLE FILE ...
SUM
FILTER
BY FILTER
ON TABLE PCHOLD FORMAT XML
END


PS When you run your procedure then you will have to look at all values to see of the user selected NONE and if so change it to create a missing where statement.




Scott

 
Posts: 865 | Registered: May 24, 2004Report This Post
arvind
Platinum Member
posted Hide Post
hi gamp,

Really sorry abt that..i am using a data-source to populate the listbox...i guess it wont work ...i have to use a procedure to populate it ...

Thanks a lot gamp and texas , i appreciate it


WebFOCUS 714
Windows XP
Output: HTML,PDF,Excel
 
Posts: 189 | Registered: January 30, 2008Report This Post
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