问题 I have a requirement to get the data from a database and write that data to files based on the filename given in the database. This is how data is defined in the database: Columns --> FILE_NAME, REC_ID, NAME Data --> file_1.csv, 1, ABC Data --> file_1.csv, 2, BCD Data --> file_1.csv, 3, DEF Data --> file_2.csv, 4, FGH Data --> file_2.csv, 5, DEF Data --> file_3.csv, 6, FGH Data --> file_3.csv, 7, DEF Data --> file_4.csv, 8, FGH As you see, basically the file names along with the data is