题目是问题下面哪些语句是正确描述VIEW的。
答案二个是:
rows cannot be deleted through a view if the view definition contains the DISTINCT keyword
我刚查资料没找到上述关于DISTINCT的解释,请大家解惑
the OR REPLACE option is used to change the definition of an existing view without dropping and re-createing
我记得用REPLACE 的话,如果原来VIEW存在,会先删除后重建的,这个和答案里面的without.......后面内容有矛盾。望解答。