SELECT NZD_Products.Prd_typename a FROM dbo.NZD_Products where dbo.NZD_Products.Prd_barcodenumber = ‘PD20090413‘ unionselect NZD_Seed.Seed_Category a from dbo.NZD_Seed where dbo.NZD_Seed.id = ‘13‘
sql 联合查询
原文：http://www.cnblogs.com/hellowzd/p/4284289.html
