Type Conversion
There are functions in Tableau to convert any field or value to another data type as long as it can be configured sufficiently. Dates and spatial fields can also be created from scratch.
In the order example data source, a type conversion function used could be the STR function, which would convert a numeric ID field into a string, as technically, IDs should not be treated as numeric values.
Data Types
For every data type in Tableau, there is a calculated field function to convert from one type to another.
The STR function converts a value to a string data type. It is formatted as STR(value) and outputs the input value as a string. This is often useful for ID fields, which may be read in by Tableau as a numeric data type. An example would be an ID field with numeric values such as 10001 being formatted as STR([ID]), resulting in the ID being cast as strings, 10001.
The INT and FLOAT functions are similar to the STR function, but instead convert values...