为什么我输入SELECT goods_price FROM tdb_goods WHERE goods_cate = '超级本';结果会是empty set。。。而从老师给的记事本中直接复制SELECT goods_price FROM tdb_goods WHERE goods_cate = '超级本';就可以呢?好奇怪啊!!!!!!!
2016-04-29
为什么我输入SELECT goods_price FROM tdb_goods WHERE goods_cate = '超级本';结果会是empty set
2016-04-29