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lang-c
csvsqlsolution, I got: [root@server test]# csvsql -I --query 'select *,("Category ID" || " " || "Sub-Category") fieldname from input' category-subcat-test.csv >output.csv (sqlite3.OperationalError) no such table: input [SQL: select *,("Category ID" || " " || "Sub-Category") fieldname from input] (Background on this error at: sqlalche.me/e/e3q8)category-subcat-test.csvin input.csv and test again. If it works, you must change the query because you must insert your file name in the query. The name of mine isinput.csvcsvsql -I --query 'select *,("Category ID" || " " || "Sub-Category") fieldname from input' category-subcat-test.csv >output.csvcsvsql -I --query 'select *,("Category ID" || " " || "Sub-Category") fieldname from "category-subcat-test"' category-subcat-test.csv >output.csv