这一段程序哪里不对?!
int impt,i,ll_return
if FileLength("D:\data_001.txt")>0 then
impt=dw_1.ImportFile("d:\data_001.txt")
if impt>0 then
connect USING SQLCA;
dw_1.setTransObject(SQLCA);
ll_return=dw_1.update()
if ll_return=1 and SQLCA.SQLNRows>0 then
commit using SQLCA;
else
ROLLBACK using SQLCA;
end if
if SQLCA.sqlcode=-1 then
messagebox("SQL error",SQLCA.sqlerrtext)
end if
else
messagebox("错误信息提示","文件data_001.txt写入失败")
end if
end if