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1，reverver的中文意思

有這個(gè)詞嗎？什么文？

你好！左輪手槍僅代表個(gè)人觀點(diǎn)，不喜勿噴，謝謝。

reverver的中文意思

2，reserve 是什么意思

n. 儲(chǔ)備，儲(chǔ)存；自然保護(hù)區(qū)；預(yù)備隊(duì)；[金融] 儲(chǔ)備金vt. 儲(chǔ)備；保留；預(yù)約vi. 預(yù)訂

重工啊！

reserve 儲(chǔ)備

儲(chǔ)備或預(yù)約的意思

儲(chǔ)備

reserve 是什么意思

3，reserver和preserve的區(qū)別

reserve的意思“保留（權(quán)利,意見(jiàn)等）”“預(yù)定（座位,機(jī)票等）” i.e.I phoned to reserve two tickets.我打電話訂了兩張票. I reserve the right to disagree.我保有否定的權(quán)利. conserve和preserve都有“保護(hù)某一事物免受傷害,損失之意”,但前者強(qiáng)調(diào)“...

reserver和preserve的區(qū)別

4，新東方詞根的問(wèn)題說(shuō)帶 re 是相反的意思然后 serve說(shuō)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.僅供參考

5，reservation 動(dòng)詞形式是什么

reservation 動(dòng)詞形式是 reserveI would like to make a reservation for a table. = I would like to reserve a table.

reserve

正確用法，但不是固定的book a reservation也是普遍的用法

reserve

預(yù)訂動(dòng)詞reserve名詞:reserver 過(guò)去式:reserved 過(guò)去分詞:reserved 現(xiàn)在分詞:reserving 第三人稱單數(shù):reserves 形容詞:reservable

reserve

6，SQL語(yǔ)句約束不重疊

用觸發(fā)器來(lái)做檢查：CREATE TRIGGER tr_iu_reservation ON reservationsFOR INSERT, UPDATE ASBEGIN IF EXISTS ( SELECT 1 FROM -- 數(shù)據(jù)庫(kù)的表與本次插入/更新的數(shù)據(jù)作關(guān)聯(lián). -- 但是排除掉本次自己更新的這些數(shù)據(jù). reservations r JOIN inserted i ON (r.reserver != i.reserver) WHERE ( -- 檢查開(kāi)始. r.start_seat <= i.start_seat and r.finish_seat >= i.start_seat ) OR ( -- 檢查結(jié)束. r.start_seat <= i.finish_seat and r.finish_seat >= i.finish_seat ) ) -- 如果存在重復(fù)的數(shù)據(jù)，那么回滾掉. ROLLBACK;ENDgo使用約束來(lái)處理創(chuàng)建函數(shù).CREATE FUNCTION reserExistsCheck( @reserver char(10), @start_seat INT, @finish_seat INT)RETURNS INTASBEGIN -- 檢查的結(jié)果. DECLARE @CheckResult INT; -- 開(kāi)始檢查: IF EXISTS ( SELECT 1 FROM reservations r WHERE r.reserver != @reserver AND ( ( -- 檢查開(kāi)始. r.start_seat <= @start_seat and r.finish_seat >= @start_seat ) OR ( -- 檢查結(jié)束. r.start_seat <= @finish_seat and r.finish_seat >= @finish_seat ) ) ) BEGIN -- 存在有重復(fù)的數(shù)據(jù). SET @CheckResult = 1; END ELSE BEGIN -- 不存在有重復(fù)的數(shù)據(jù). SET @CheckResult = 0; END -- 處理完畢. 返回. RETURN @CheckResult;END;GO-- 為表新增加約束.ALTER TABLE reservations ADD CONSTRAINT reservations_check CHECK (dbo.reserExistsCheck(reserver, start_seat, finish_seat) = 0);GO