1，reverver的中文意思

有这个词吗？什么文？
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reverver的中文意思

2，reserve 是什么意思

n. 储备，储存；自然保护区；预备队；[金融] 储备金vt. 储备；保留；预约vi. 预订
重工啊！
reserve 储备
储备或预约的意思
储备

reserve 是什么意思

3，reserver和preserve的区别

reserve的意思“保留（权利,意见等）”“预定（座位,机票等）” i.e.I phoned to reserve two tickets.我打电话订了两张票. I reserve the right to disagree.我保有否定的权利. conserve和preserve都有“保护某一事物免受伤害,损失之意”,但前者强调“...

reserver和preserve的区别

4，新东方词根的问题说带 re 是相反的意思然后 serve说是保存的

"something stored up," 1610s, from reserve (v.) or from French réserve, a Middle French back-formation from reserver. Meaning "self-imposed restraint on freedom of words or actions; habit of keeping back the feelings" is from 1650s.仅供参考

5，reservation 动词形式是什么

reservation 动词形式是 reserveI would like to make a reservation for a table. = I would like to reserve a table.
reserve
正确用法，但不是固定的book a reservation也是普遍的用法
reserve
预订 动词reserve名词:reserver 过去式:reserved 过去分词:reserved 现在分词:reserving 第三人称单数:reserves 形容词:reservable
reserve

6，SQL语句约束不重叠

用触发器来做检查：CREATE TRIGGER tr_iu_reservation ON reservationsFOR INSERT, UPDATE ASBEGIN IF EXISTS ( SELECT 1 FROM -- 数据库的表 与 本次插入/更新的数据作关联. -- 但是排除掉 本次自己更新的这些数据. reservations r JOIN inserted i ON (r.reserver != i.reserver) WHERE ( -- 检查 开始. r.start_seat <= i.start_seat and r.finish_seat >= i.start_seat ) OR ( -- 检查 结束. r.start_seat <= i.finish_seat and r.finish_seat >= i.finish_seat ) ) -- 如果存在重复的数据，那么回滚掉. ROLLBACK;ENDgo使用约束来处理创建函数.CREATE FUNCTION reserExistsCheck( @reserver char(10), @start_seat INT, @finish_seat INT)RETURNS INTASBEGIN -- 检查的结果. DECLARE @CheckResult INT; -- 开始检查: IF EXISTS ( SELECT 1 FROM reservations r WHERE r.reserver != @reserver AND ( ( -- 检查 开始. r.start_seat <= @start_seat and r.finish_seat >= @start_seat ) OR ( -- 检查 结束. r.start_seat <= @finish_seat and r.finish_seat >= @finish_seat ) ) ) BEGIN -- 存在有重复的数据. SET @CheckResult = 1; END ELSE BEGIN -- 不存在有重复的数据. SET @CheckResult = 0; END -- 处理完毕. 返回. RETURN @CheckResult;END;GO-- 为表新增加约束.ALTER TABLE reservations ADD CONSTRAINT reservations_check CHECK (dbo.reserExistsCheck(reserver, start_seat, finish_seat) = 0);GO

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