I'd really like to know why a query using hard coded device_ids can use the index, but using a subquery doesn't: E.g. Hardcoding uses the index: DELETE FROM device_data WHERE device_id in (1,2,3...1000) AND timestamp <= CURDATE() - INTERVAL 1 YEAR LIMIT 10000; ...
why don't和why not的区别：中文含义不同、句子结构不同、时态变化不同。why don't是指惋惜甚至责怪别人没有做某件事的意思，有时态的变化，后加主语再加动词；why not则是表达一种建议，没有时态变化，后面直接加动词。一、why don't的中文释义及用法介绍 1、中文释义：why don't意为为什么不...
题目 why don't you go to see a film?改为同义句why_ _ to see a film? 扫码下载作业帮拍照答疑一拍即得 答案解析 查看更多优质解析 举报 更多答案(6) 特别推荐 二维码 回顶部©2021 作业帮 联系方式:service@zuoyebang.com 作业帮协议
@初中英语语法练习助手why not和why don't的区别 初中英语语法练习助手 这个问题涉及到了英语中两种常见的表达方式,它们虽然看起来相似,但在语法和用法上有所区别。 首先,"why not" 是一个固定短语,用于提出建议或表示同意某个观点。它通常作为独立的句子或句子的一部分出现,不直接包含动词的完整形式。例如:...
Why Can't I Fly? 作者:Sharon Cornwell ISBN:9780431061542 豆瓣评分 目前无人评价 评价: 写笔记 写书评 加入购书单 分享到 推荐 我要写书评 Why Can't I Fly?的书评 ···(全部 0 条) + 加入购书单 谁读这本书?··· 二手市场· ··· 在豆瓣转让手里有...
Why not和 Why don't的区别主要句型意思用法 扫码下载作业帮搜索答疑一搜即得 答案解析 查看更多优质解析 解答一 举报 更多答案(1) 特别推荐 热点考点 2022年高考真题试卷汇总 2022年高中期中试卷汇总 2022年高中期末试卷汇总 2022年高中月考试卷汇总 二维码 回顶部©2021 作业帮 联系方式:service@zuoyebang.com...
《悬崖上的谋杀WhyDidn'tTheyAskEvans?》剧情简介 本剧改编自阿加莎·克里斯蒂同名小说《悬崖上的谋杀》。故事讲述当地牧师的儿子Bobby Jones和他机灵的社交名媛朋友Frances “Frankie” Derwent发现了一个奄奄一息的男人,临死前嘟囔着“他们怎么不去找Evans”,两人由此踏上了破案之路。带着从男人口袋里找到的年...
"I ran into Mrs. Jones,"she wailed. u I didn't know that her husband died last week,and I asked her hoW he was feeling. She said,‘He's gone.’ I assumed he went someplace for his health,and I said.. “我碰见了琼斯太太,”她哀导着。 “我不知道她丈夫上周去逝了,我问她他身体...
Re: Why can't MySQL use a range over a Clustered Primary Key Paul Dugdale January 20, 2022 11:56AM Re: Why can't MySQL use a range over a Clustered Primary Key Peter Brawley January 20, 2022 08:45PM Sorry, you can't reply to this topic. It has been closed....
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