In PySpark,fillna() from DataFrame class or fill() from DataFrameNaFunctions is used to replace NULL/None values on all or selected multiple columns with either zero(0), empty string, space, or any constant lit
By using PySpark SQL functionregexp_replace()you can replace a column value with a string for another string/substring.regexp_replace()usesJava regexfor matching, if the regex does not match it returns an empty string, the below example replaces the street nameRdvalue withRoadstring onaddressc...