|
"Love all, trust a
few. Do wrong to none." William Shakespeare (1564 - 1616) |
Read
first then play the video:
RPT-VIDEO -(Hands-On
11) How to use LOVs (List Of Values)
LOVs (List of Values)
Introduction
A "List of Values",
can be used as a validation mechanism for values defined in user
parameters. Your LOV or "List of Values" can consist either of
static values or items queried from the database using select
statements.
Hands-on
Since your parameter report
is very handy for your client organization, they ask you to create a
list of values (LOV) for the parameter so they can only select from
the list rather than trying to remember the company symbol.
Also add more parameter to
pass such as the destination of printer, and so on.
See Figure 11.
Your tasks are:
1- Modify the "Customers
List Parameter" Form.
2- Add LOV to the "symbol"
item.
3- Add one more parameter
"Destination Type" to the "customers List Parameter" Form.
4- Run the report.
5- Test the report.
F You will learn how
to: use parameter, modify parameter properties using property palette,
use query builder, and add more parameters to existing parameter form.
Figure 11
List of Values
A "List of Values",
can be used as a validation mechanism for values defined in user
parameters. Your LOV or "List of Values" can consist either of
static values or items queried from the database using select
statements.
Open the Report Builder
tool.
Open a Module
In the "Object Navigator"
window, go to the Main menu and choose "File," select "Open"
to open an existing report (REPT09) from the "iself" folder
Save a Module
Save it as report number 11
(REPT11). You do this to leave the REPT09 module untouched.
(File > Save as)
In the Object Navigator, on
the vertical toolbar, double click on the "Layout Model"
icon."
Open Parameter Form Builder
window
In the "Report Editor -
Layout Model" window, click on the "Parameter Form" icon
which is on the horizontal toolbar.
The Report Editor -
Parameter Form window, will be opened. In the Parameter Form window,
click on the "Parameter Form Builder" icon which is on the
horizontal toolbar.
Add objects to Parameter
Form
The Parameter Form Builder
window will be displayed. In the "Parameter Form Builder" window,
change the Title item to "Customer"s Symbol List," click on the
DESTYPE (Destination Type) parameter to select it, notice that the "Symbol"
parameter has already been selected, and then click "OK."
Now in your "Report
Editor - Parameter Form," you should see only two parameters such as
Destination type and Symbol (PF_DESTYPE and PF_SYMBOL).
Change a Fields"
properties
Right click on the
PF_SYMBOL field and open its property palette. In its parameter
palette, type "ORCL" in the "Initial Value" box, and double
click on the "List of Values" box.
In the "Parameter List of
Value" window, checkmark the "Select Statement" radio button and
type the following SQL statement into the "SQL Query Statement"
box.
SELECT DISTINCT symbol
FROM stocks
Click "OK," close
the property window, and then close "Parameter Form Builder."
Run a report
In the Object Navigator,
highlight the report and click on the Run icon on the toolbar to run
the report.
A parameter window will be
displayed. Now, you can generate your report on a different
destination type such as Screen, File, Printer, Mail, and Preview.
Select your prefer
destination type, your company"s symbol, and click on the Run icon
to run the report
Repeat this process for
different companies.
At the end, highlight the
report and save the changes (REPT11).
|
"It is pretty hard
to tell what does bring happiness; poverty and wealth have both
failed." Kin Hubbard (1868 - 1930) |
Questions:
Q: Describe a List of
Values in the report module?
Q: How do you create a user
parameter item?
Q: How do you define a
system parameter item?
Q: How do you modify a user
parameter properties using property palette?
Q: How do you use the Query
Builder tool?
Q: Since your parameter
report is very handy for your client organization, they ask you to
create a list of values (LOV) for the parameter so they can only
select from the list rather than trying to remember the company
symbol.
Also add more parameter to
pass such as the destination of printer, and so on.
See Figure 11.
Your tasks are:
1- Modify the "Customers
List Parameter" Form.
2- Add LOV to the "symbol"
item.
3- Add one more parameter
"Destination Type" to the "customers List Parameter" Form.
4- Run the report.
5- Test the report.
|