Databases Reference
In-Depth Information
Standardizing and organizing script
Have you ever experienced the following situation? A challenging problem
presents itself. After many hours of thinking, developing, thinking some more, and
developing some more, you have crafted a solution. "This is brilliant work!" you say
to yourself, "It completely solves the problem, and in a very elegant way too."
Fast-forward a few months. A new business question presents itself and a small
change to your original solution is required. You look at your original work, and
after some poking around decide that you can make neither head nor tail of it."This
is horrible work!" you say to yourself, "What was I thinking at the time?".
Did your script really go from brilliant to rubbish over the course of 6 months?
Most likely not. You have just lost familiarity with the script. Fortunately, there
are ways to ensure that you (and others) are able to quickly get up to speed when
modifying existing QlikView script. The secrets are organizing your scripts and
using naming conventions.
Using tabs
As we saw when we first looked at the script editor, the script can be split up into
different tabs. It is advisable to divide your script into different tabs, each one
focusing on a different functional area or table.
To add a tab, select
Tab | Add Tab
from the menu or click the
Add new tab button
on the toolbar. Tabs can be moved left and right by selecting
Tab | Promote
and
Tab
| Demote
respectively, or by clicking the corresponding buttons on the toolbar.
Let's organize our script by opening the script editor and following these steps:
1.
Select
Tab | Add Tab
from the menu.
2.
Name the tab
Mapping
and click on
OK
to close the
Tab Rename
window.
3.
Promote the
Mapping
tab so that it is in front of the
Main Data
tab.
4.
Move all
MAPPING LOAD
statements (
Map_Manufacturer_Country
,
Map_
Table_Comments
, and
Map_Field_Comments
) from the
Aircrafts
tab to the
Mapping
tab.
5.
Create a new tab by clicking on the
Add new tab
button on the toolbar.
6.
Name the tab
Comments
and click on
OK
to close the
Tab Rename
window.
7.
Promote the
Comments
tab so that it is in front of the
Main Data
tab.
8.
Move all
COMMENT
statements from the
Aircrafts
tab to the
Comments
tab.
9.
Save
the document.
