SELE * FROM stock_sl INTO DBF stock_bk
INSE INTO stock_bk (股票代码,买入价,现价,持有数量)VALU("600028",4.36,4.60,5500)
UPDA stock_bk SET 现价=8.88 WHER 股票代码="600007"
DELE FROM stock_bk WHER 股票代码="600000"