SQLLDR HSTA/HSTA CONTROL=SQLLoader.ctl SKIP=4 LOAD=6(只导入四到九行的记录)
数据文件默认是.dat结尾
对时间类型数据的转换：
D_REQUESTDATE POSITION(*)char(8)"to_date(:D_REQUESTDATE,'YYYYMMDD')"
D_REQUESTTIME POSITION(*)char(6)"to_date(:D_REQUESTDATE||:D_REQUESTTIME,'YYYYMMDDhh24miss')"
FILTER过滤列
