There are different ways that the data in your database can be stored. For example, we know the '3' is a number, but your database can recognise it as a number (also called an integer), or it can recognise it as text. When you're doing certain actions with columns, it can be helpful to have the data in certain formats.
If you want to cast a column as a different data type, you can convert using 'add a new column' or the easier option is to use the column headers like so:
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