select STOCK.WSTOCKID, 
STOCK.WOUTPUTTAXID,
STOCK.FSELLINGPRICE1, 
STOCK.FSELLINGPRICE2, 
STOCK.FSELLINGPRICE3, 
STOCK.WSTOCKTYPEID, 
OutTax.FRate outTaxRate,
IMP_SOURCE_EXTRA.BCHANGEPRICE
from 
stock 
left join Tax OutTax on(stock.WOutputtaxid = OutTax.WaccountId) 
join  IMP_SOURCE_EXTRA on IMP_SOURCE_EXTRA.imp_sourceid =<@SOURCEID@> 
where Stock.WStockid = <@WSTOCKID@> 