sql语句练习题单表+多表各四套

上传者: 21499171 | 上传时间: 2021-08-15 14:54:27 | 文件大小: 22KB | 文件类型: RAR
练习题含有四套多表,四套单表,里面还有数据库数据的准备,直接导入sql就可以直接上练习多表单表了,对提升写sql语句有很大帮助

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