答:linux中采用man,help与info命令，在mysql中是help建议在学习的时候多采用帮助文档；
mysql> help contents
Account Management...DEFAULT CHARSET = utf8;
CREATE TABLE `user_kc`(
`xh` int(8) NOT NULL DEFAULT 0 COMMENT '主键学号',
`kcm...'2013级',19,'物联网工程');
INSERT INTO user_kc VALUES (1002,"Python编程",79.1),(1001,"JAVA编程",89.5),(1003,"LINUX...,(1002,"Python编程",79.5),(1004,"C语言之精华",59.5);
基础示例:
-- 联表查询
SELECT user.xh,user.xm,user.nj,user_kc.kcm..., '成绩:', kc.grade) AS '成绩信息',
FROM user AS u,user_kc AS kc
WHERE kc.xh = u.xh AND kc.kcm = 'Python编程
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