第1章：初识MySQL ——课后做业：

#图书信息表auth DESC `book`; DROP TABLE IF EXISTS `book`; CREATE TABLE `book`( `bid`CHAR COMMENT'图书编号'PRIMARY KEY, `bName`CHAR COMMENT'图书书名', `author`CHAR COMMENT'做者姓名', `pubComp`CHAR COMMENT'出版社', `pubDat

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