Why Can't I Fly? 作者:Sharon Cornwell ISBN:9780431061542 豆瓣评分 目前无人评价 + 加入购书单
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; ...
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1、两个句子结构不同：why don't + 主语 + 动词；why not一定要直接跟版动词，动词前不能有其他成分。2、why don't 结构可以有时态的变化，比如变为过去时why didn't，完成式why haven't等；why not没有时态变化。3、why not可以独立成句，而why don't不可以。最后总结，通过以上关于why ...
Living in school is less comfortable than living at home but at school I can learn more skills., 《八年级英语下册 unit 4 why don't you talk to your parents写作专题—section b(3a-3b)习题课件 (新版)人教新目标版》由会员简***9分享,可在线阅读,更多相关《八年级英语下册 unit 4...
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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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