The Multiple Intify processor changes the data type of the selected columns to integer.
All kinds of data types are possible, though the way datetime and string values are handled depends on their content.
Rounding Strategy: The available rounding modes are the same as in the Rounding processor: Ceiling, Down, Floor, Half Down, Half Even, Half Up & Up. Descriptions and examples for all modes can be found under the official Java documentation for RoundingMode.
The output is the dataset from the input, but values of columns selected in the configuration are converted to integers.
Something or Other
All columns are selected to be converted. If rounding is necessary, the strategy DOWN is to be used. Should a value not be convertible, then zero will be set instead.
As configured, all non-numerical string entries under product_name got assigned "0". All string values under special-offer_price_(€) only consist of numbers, so they were able to be converted to integers after rounding. As expected, no change in column product_id.
When using a Result Table processor, the data type of a column can be checked in the JSON result of the processor under schema. Another possibility would be to save the data using the Data Table Save processor and check the types of the columns in the table entry under the DATA TABLES tab of the project.