What is the default length of the result when using the CATX function?

The default length of the result when using the CATX function is 200 bytes. The CATX function in SAS concatenates multiple strings and removes any leading or trailing blanks between the concatenated strings, inserting a specified delimiter. When using this function, if the total length of the result exceeds its default maximum length, only the first 200 bytes of the concatenated string will be retained.

This default behavior is important for SAS programmers to remember, especially when dealing with large strings or when the resulting length of the concatenated output may be longer than expected. Understanding the default length helps in making decisions about how to handle string data and avoid truncation of important information during data manipulation processes.