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Problem Statement
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During development, we may be creating and removing fields from our form design. This would eventually lead to having unused columns in the database table. In this exercise, we will discuss how to organize a table structure and eventually remove the unused columns. For the purpose of this exercise, we will be focusing on the table named sample. In Joget's database, the table name is app_fd_sample. |
Understanding the Table Structure
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We can swiftly open up the form in the form builder by putting replacing the parameters as shown in the screenshot below.
Figure 1: Inspecting the form in form builder.
If you do not have access to the database to execute the SQLs in this article, Joget has a built-in feature to find out the usages of the table too. You may click on "Advanced Tools" > "Table" to find out the usages of the same table name too.
We can only click on "Show Table Usage In Other Apps" too to find out the table's usages of the table in other apps.
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Look for the file with the exact same table name. In our case, we are looking for "app_fd_sample.hbm.xml"
This step is critical. This is so that Joget would transverse through all the forms that point to the table name to generate a new mapping file, which in turn, generates any missing columns back in the database table. By not deleting this file and force a refresh, Joget would continue to assume that the table structure is still the same as always.
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