Several scenarios may occur where you would need to delete unnecessary columns from your
datasets, in order to remove empty columns, or delete information that is not relevant
anymore.
Talend Data Preparation allows
you to delete multiple columns in one single action.
Let's take the example of a dataset containing some customers data, but where the
information on the age, salary or marital status is missing. This leaves you with three
empty columns, that you will delete in one go, with the dedicated function, to clean
your dataset.
Procedure
While pressing the Ctrl key, click
the headers of every column you want to delete, Age,
Salary_Out and MaritalStatus in
this example.
All three columns are now selected and highlighted in blue.
In the Functions panel, select the Delete
column function.
The function directly applies and the three columns are deleted. Three recipe
steps are created, one for each column.
It is also possible to delete an individual column by clicking the menu icon
in a column header and selecting Delete Column.
However, using the dedicated function is the most efficient way to delete
multiple columns at the same time.
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