ET DEFAULT TO ?SET CENTURY onSET DATE FRENCHUSE chuhoBROWSEUSE khuvucBROWSEUSE sudungBROWSECLOSECLOSE ALLSELECT bUSE khuvuc ALIAS kvSELECT aUSE sudung ALIAS sdUPDATE on mskv from sd repl tien with somk * kv.giaBROWSEUSE sudungINDEX on mskv tocs1INDEX on mskv TO cs1TOTAL ON mskv TO th_kv FIELDS somk, tienBROWSEUSE th_kvBROWSEUSE th_kvSORT TO sx_kv ON tiendSORT TO sx_kv ON tien/dBROWSEUSE sx_kvBROWSECLOSE ALLSELECT bUSE sx_kv ALIAS sxSELECT aUSE sudungjoin with sx to kqua for mskv=sx.mskv msch, somk, tienUSE kquaCLOSE ALLSELECT bUSE sx_kv ALIAS sxINDEX on mskv TO cs1INDEX on mskv TO cs2SELECT aUSE sudungSET RELATION TO mskv INTO sxBROWSE FIELDS msch, somk, tienBROWSE FIELDS mskv, msch, somk, tienUSE th_kvREPORT FORM thongke PREVIEWREPORT FORM thongketinhhinhsudungtheokhuvuc...