在定义基本表的SQL语句CREATE TABLE中,如果要定义某个属性不能取空值,应 发布时间:2017-07-13 22:43 │ 来源:www.tikuol.com 题型:填空题 问题: 在定义基本表的SQL语句CREATE TABLE中,如果要定义某个属性不能取空值,应在该属性后面使用的约束条件短语是 ______。
题型:填空题 Everyone ______ very happy at the fashion show last Sunday. [ ]A. is B. are C. was D. were 查看答案