Which function should a Data Analyst use to remove unnecessary semicolons from a string field named Name?

The function that should be used to remove unnecessary semicolons from a string field is the REPLACE function. This function allows the user to specify a substring to be removed or replaced within a string. In this case, by using REPLACE, a Data Analyst can target semicolons and replace them with an empty string, effectively removing them from the original text in the Name field.

For instance, if the string is "John; Doe; Jane", applying REPLACE to substitute ";" with "" results in "John Doe Jane". This is particularly useful for cleaning data that might have extraneous or unwanted characters that can interfere with data analysis.

TRIM is not appropriate here, as it primarily removes leading and trailing spaces from a string, not specific characters within it. REMOVE is not a standard Tableau function, and SUBSTITUTE is designed to replace one substring with another but is not commonly used for straightforward character removal. Thus, REPLACE provides the most direct and effective method for eliminating semicolons from the string.