Toolkit based on awk that emulates simple SQL gramma execution
awk -f sql.awk "tiny sql statement" CSV_FILENAME [| PIPELINE COMMAND]
awk -f sql.awk "HEADER" data.csv
awk -f sql.awk "SELECT name,age" data.csv
awk -f sql.awk "WHERE age=20" data.csv
awk -f sql.awk "GROUP BY age" data.csv
awk -f sql.awk "ORDER BY age" data.csv