From 12a2c9312ecb2467ac3356f61a5fcfda96d6a51c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E5=BD=AD=E5=8B=87=E6=96=8C?= <1761144610@qq.com> Date: Mon, 13 Mar 2023 22:09:53 +0800 Subject: [PATCH 1/2] =?UTF-8?q?=E7=AC=AC=E5=85=AD=E6=AC=A1=E4=BD=9C?= =?UTF-8?q?=E4=B8=9A?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- "19\345\275\255\345\213\207\346\226\214/6.md" | 184 ++++++++++++++++++ 1 file changed, 184 insertions(+) create mode 100644 "19\345\275\255\345\213\207\346\226\214/6.md" diff --git "a/19\345\275\255\345\213\207\346\226\214/6.md" "b/19\345\275\255\345\213\207\346\226\214/6.md" new file mode 100644 index 0000000..152e7d1 --- /dev/null +++ "b/19\345\275\255\345\213\207\346\226\214/6.md" @@ -0,0 +1,184 @@ +| ```mysql | | | +| -------- | ------------------------------------------------------------ | ------------------------------------------------------------ | +| | [2](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_2) | create database studen charset utf8; | +| | [3](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_3) | use studen; | +| | [4](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_4) | create table stuinfo( | +| | [5](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_5) | stuNO varchar(11) primary key, | +| | [6](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_6) | stuName varchar(11) unique key not null, | +| | [7](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_7) | stuAge int not null, | +| | [8](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_8) | stuAddress varchar(11) not null, | +| | [9](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_9) | stuSeat int not null, | +| | [10](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_10) | stuSex int not null | +| | [11](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_11) | ); | +| | [12](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_12) | create table stuexam( | +| | [13](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_13) | examNO int not null unique key auto_increment, | +| | [14](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_14) | stuNO varchar(11) primary key, | +| | [15](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_15) | writtenExam int not null, | +| | [16](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_16) | labExam int not null, | +| | [17](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_17) | foreign key (stuNO) references stuinfo(stuNO) | +| | [18](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_18) | ); | +| | [19](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_19) | insert into stuinfo values | +| | [20](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_20) | ('s2501','张秋利',20,'美国硅谷',1,1), | +| | [21](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_21) | ('s2502','李斯文',18,'湖北武汉',2,0), | +| | [22](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_22) | ('s2503','马文才',22,'湖南长沙',3,1), | +| | [23](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_23) | ('s2504','欧阳俊雄',21,'湖北武汉',4,0), | +| | [24](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_24) | ('s2505','梅超风',20,'湖北武汉',5,1), | +| | [25](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_25) | ('s2506','陈旋风',19,'美国硅谷',6,1), | +| | [26](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_26) | ('s2507','陈风',20,'美国硅谷',7,0); | +| | [27](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_27) | insert into stuexam values | +| | [28](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_28) | (1,'s2501',50,70), | +| | [29](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_29) | (2,'s2502',60,65), | +| | [30](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_30) | (3,'s2503',86,85), | +| | [31](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_31) | (4,'s2504',40,80), | +| | [32](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_32) | (5,'s2505',70,90), | +| | [33](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_33) | (6,'s2506',85,90); | +| | [34](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_34) | ``` | +| | [35](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_35) | | +| | [36](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_36) | 1.查询学生信息表（stuinfo）中所有列信息，给每列取上中文名称 | +| | [37](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_37) | | +| | [38](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_38) | ```mysql | +| | [39](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_39) | select stuNO 学号,stuName 姓名,stuAge 年龄,stuAddress 地址,stuSeat 号数,stuSex 性别 from stuinfo; | +| | [40](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_40) | ``` | +| | [41](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_41) | | +| | [42](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_42) | 2.查询学生信息表（stuinfo）中的姓名，年龄和地址三列的信息 | +| | [43](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_43) | | +| | [44](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_44) | ```mysql | +| | [45](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_45) | select stuName 姓名,stuAge 年龄,stuAddress 地址 from stuinfo; | +| | [46](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_46) | ``` | +| | [47](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_47) | | +| | [48](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_48) | 3.查询学生分数表（stuexam）中的学号，笔试和机试三列的信息，并为这三列取中文名字 | +| | [49](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_49) | | +| | [50](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_50) | ```mysql | +| | [51](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_51) | select stuNO 学号,writtenExam 笔试,labExam 机试 from stuexam; | +| | [52](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_52) | ``` | +| | [53](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_53) | | +| | [54](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_54) | 5.查询学生分数表（stuexam）中的学生的学号，笔试，机试以及总分这四列的信息 | +| | [55](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_55) | | +| | [56](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_56) | ```mysql | +| | [57](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_57) | select stuNO 学号,writtenExam 笔试,labExam 机试,writtenExam+labExam 总分 from stuexam; | +| | [58](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_58) | ``` | +| | [59](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_59) | | +| | [60](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_60) | 6.查询学生信息表（stuInfo）中学生来自哪几个地方 | +| | [61](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_61) | | +| | [62](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_62) | ```mysql | +| | [63](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_63) | select distinct stuAddress from stuinfo; | +| | [64](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_64) | ``` | +| | [65](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_65) | | +| | [66](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_66) | 7.查询学生信息表（stuInfo）中学生有哪几种年龄，并为该列取对应的中文列名 | +| | [67](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_67) | | +| | [68](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_68) | ```mysql | +| | [69](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_69) | select stuAge 年龄 from stuinfo group by stuAge; | +| | [70](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_70) | ``` | +| | [71](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_71) | | +| | [72](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_72) | 8.查询学生信息表（stuInfo）中前3行记录 | +| | [73](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_73) | | +| | [74](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_74) | ```mysql | +| | [75](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_75) | select * from stuinfo limit 0,3; | +| | [76](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_76) | ``` | +| | [77](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_77) | | +| | [78](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_78) | 9.查询学生信息表（stuInfo）中前4个学生的姓名和座位号 | +| | [79](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_79) | | +| | [80](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_80) | ```mysql | +| | [81](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_81) | select stuName,stuSeat from stuinfo limit 0,4; | +| | [82](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_82) | ``` | +| | [83](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_83) | | +| | [84](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_84) | 11.将地址是湖北武汉，年龄是20的学生的所有信息查询出来 | +| | [85](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_85) | | +| | [86](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_86) | ```mysql | +| | [87](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_87) | select * from stuinfo where stuAddress='湖北武汉' and stuAge=20; | +| | [88](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_88) | ``` | +| | [89](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_89) | | +| | [90](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_90) | 12.将机试成绩在60-80之间的信息查询出来，并按照机试成绩降序排列 | +| | [91](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_91) | | +| | [92](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_92) | ```mysql | +| | [93](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_93) | select * from stuexam where labExam between 60 and 80 order by labExam desc; | +| | [94](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_94) | ``` | +| | [95](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_95) | | +| | [96](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_96) | 13.查询来自湖北武汉或者湖南长沙的学生的所有信息 | +| | [97](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_97) | | +| | [98](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_98) | ```mysql | +| | [99](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_99) | select * from stuinfo where stuAddress='湖北武汉' or stuAddress='湖南长沙'; | +| | [100](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_100) | ``` | +| | [101](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_101) | | +| | [102](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_102) | 14.查询出笔试成绩不在70-90之间的信息,并按照笔试成绩升序排列 | +| | [103](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_103) | | +| | [104](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_104) | ```mysql | +| | [105](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_105) | select * from stuexam where writtenExam not between 70 and 90 order by writtenExam asc; | +| | [106](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_106) | ``` | +| | [107](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_107) | | +| | [108](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_108) | 15.查询年龄没有写的学生所有信息 | +| | [109](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_109) | | +| | [110](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_110) | ```mysql | +| | [111](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_111) | select * from stuinfo where stuAge is null; | +| | [112](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_112) | ``` | +| | [113](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_113) | | +| | [114](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_114) | 16.查询年龄写了的学生所有信息 | +| | [115](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_115) | | +| | [116](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_116) | ```mysql | +| | [117](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_117) | select * from stuinfo where stuage is not null; | +| | [118](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_118) | ``` | +| | [119](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_119) | | +| | [120](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_120) | 17.查询姓张的学生信息 | +| | [121](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_121) | | +| | [122](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_122) | ```mysql | +| | [123](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_123) | select * from stuinfo where stuName like '张%'; | +| | [124](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_124) | ``` | +| | [125](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_125) | | +| | [126](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_126) | 18.查询学生地址中有‘湖’字的信息 | +| | [127](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_127) | | +| | [128](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_128) | ```mysql | +| | [129](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_129) | select * from stuinfo where stuAddress like '%湖%'; | +| | [130](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_130) | ``` | +| | [131](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_131) | | +| | [132](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_132) | 19.查询姓张但名为一个字的学生信息 | +| | [133](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_133) | | +| | [134](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_134) | ```mysql | +| | [135](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_135) | select * from stuinfo where stuName like '张_'; | +| | [136](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_136) | ``` | +| | [137](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_137) | | +| | [138](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_138) | 20.查询姓名中第三个字为‘俊’的学生的信息，‘俊’后面有多少个字不限制 | +| | [139](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_139) | | +| | [140](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_140) | ```mysql | +| | [141](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_141) | select * from stuinfo where stuname like '__俊%'; | +| | [142](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_142) | ``` | +| | [143](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_143) | | +| | [144](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_144) | 21.按学生的年龄降序显示所有学生信息 | +| | [145](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_145) | | +| | [146](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_146) | ```mysql | +| | [147](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_147) | select * from stuinfo order by stuAge desc; | +| | [148](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_148) | ``` | +| | [149](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_149) | | +| | [150](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_150) | 22.按学生的年龄降序和座位号升序来显示所有学生的信息 | +| | [151](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_151) | | +| | [152](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_152) | ```mysql | +| | [153](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_153) | select * from stuinfo order by stuAge desc,stuSeat asc; | +| | [154](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_154) | ``` | +| | [155](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_155) | | +| | [156](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_156) | 23显示笔试第一名的学生的考试号，学号，笔试成绩和机试成绩 | +| | [157](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_157) | | +| | [158](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_158) | ```mysql | +| | [159](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_159) | select examNO,a.stuNO,writtenExam,labExam from stuinfo a right join stuexam b on a.stuno=b.stuNO where writtenExam=(select max(writtenExam) from stuexam); | +| | [160](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_160) | ``` | +| | [161](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_161) | | +| | [162](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_162) | 24.显示机试倒数第一名的学生的考试号，学号，笔试成绩和机试成绩 | +| | [163](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_163) | | +| | [164](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_164) | ```mysql | +| | [165](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_165) | select examNO,a.stuNO,writtenExam,labExam from stuinfo a right join stuexam b on a.stuno=b.stuNO where labExam=(select min(labExam) from stuexam); | +| | [166](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_166) | ``` | +| | [167](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_167) | | +| | [168](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_168) | 25.查询每个地方的学生的平均年龄 | +| | [169](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_169) | | +| | [170](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_170) | ```mysql | +| | [171](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_171) | select stuAddress,round(avg(stuAge),2) 平均年龄 from stuinfo group by stuAddress; | +| | [172](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_172) | ``` | +| | [173](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_173) | | +| | [174](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_174) | 26.查询男女生的分别的年龄总和 | +| | [175](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_175) | | +| | [176](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_176) | ```mysql | +| | [177](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_177) | select stuSex,sum(stuAge) 年龄总和 from stuinfo group by stuSex; | +| | [178](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_178) | ``` | +| | [179](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_179) | | +| | [180](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_180) | 27.查询每个地方的男女生的平均年龄和年龄的总和 | +| | [181](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_181) | | +| | [182](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_182) | ```mysql | +| | [183](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_183) | select stuSex,round(avg(stuAge),2) 平均年龄,sum(stuAge) 年龄总和 from stuinfo group by stuSex; | \ No newline at end of file -- Gitee From ad51e7bbd411a797744dec986ac67a6cded52426 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E5=BD=AD=E5=8B=87=E6=96=8C?= <1761144610@qq.com> Date: Mon, 13 Mar 2023 22:27:23 +0800 Subject: [PATCH 2/2] =?UTF-8?q?=E4=BD=9C=E4=B8=9A?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- "19\345\275\255\345\213\207\346\226\214/6.md" | 184 ------------------ .../\344\275\234\344\270\232.md" | 184 ++++++++++++++++++ 2 files changed, 184 insertions(+), 184 deletions(-) delete mode 100644 "19\345\275\255\345\213\207\346\226\214/6.md" create mode 100644 "19\345\275\255\345\213\207\346\226\214/\344\275\234\344\270\232.md" diff --git "a/19\345\275\255\345\213\207\346\226\214/6.md" "b/19\345\275\255\345\213\207\346\226\214/6.md" deleted file mode 100644 index 152e7d1..0000000 --- "a/19\345\275\255\345\213\207\346\226\214/6.md" +++ /dev/null @@ -1,184 +0,0 @@ -| ```mysql | | | -| -------- | ------------------------------------------------------------ | ------------------------------------------------------------ | -| | [2](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_2) | create database studen charset utf8; | -| | [3](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_3) | use studen; | -| | [4](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_4) | create table stuinfo( | -| | [5](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_5) | stuNO varchar(11) primary key, | -| | [6](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_6) | stuName varchar(11) unique key not null, | -| | [7](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_7) | stuAge int not null, | -| | [8](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_8) | stuAddress varchar(11) not null, | -| | [9](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_9) | stuSeat int not null, | -| | [10](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_10) | stuSex int not null | -| | [11](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_11) | ); | -| | [12](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_12) | create table stuexam( | -| | [13](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_13) | examNO int not null unique key auto_increment, | -| | [14](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_14) | stuNO varchar(11) primary key, | -| | [15](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_15) | writtenExam int not null, | -| | [16](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_16) | labExam int not null, | -| | [17](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_17) | foreign key (stuNO) references stuinfo(stuNO) | -| | [18](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_18) | ); | -| | [19](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_19) | insert into stuinfo values | -| | [20](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_20) | ('s2501','张秋利',20,'美国硅谷',1,1), | -| | [21](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_21) | ('s2502','李斯文',18,'湖北武汉',2,0), | -| | [22](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_22) | ('s2503','马文才',22,'湖南长沙',3,1), | -| | [23](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_23) | ('s2504','欧阳俊雄',21,'湖北武汉',4,0), | -| | [24](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_24) | ('s2505','梅超风',20,'湖北武汉',5,1), | -| | [25](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_25) | ('s2506','陈旋风',19,'美国硅谷',6,1), | -| | [26](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_26) | ('s2507','陈风',20,'美国硅谷',7,0); | -| | [27](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_27) | insert into stuexam values | -| | [28](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_28) | (1,'s2501',50,70), | -| | [29](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_29) | (2,'s2502',60,65), | -| | [30](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_30) | (3,'s2503',86,85), | -| | [31](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_31) | (4,'s2504',40,80), | -| | [32](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_32) | (5,'s2505',70,90), | -| | [33](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_33) | (6,'s2506',85,90); | -| | [34](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_34) | ``` | -| | [35](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_35) | | -| | [36](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_36) | 1.查询学生信息表（stuinfo）中所有列信息，给每列取上中文名称 | -| | [37](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_37) | | -| | [38](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_38) | ```mysql | -| | [39](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_39) | select stuNO 学号,stuName 姓名,stuAge 年龄,stuAddress 地址,stuSeat 号数,stuSex 性别 from stuinfo; | -| | [40](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_40) | ``` | -| | [41](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_41) | | -| | [42](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_42) | 2.查询学生信息表（stuinfo）中的姓名，年龄和地址三列的信息 | -| | [43](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_43) | | -| | [44](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_44) | ```mysql | -| | [45](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_45) | select stuName 姓名,stuAge 年龄,stuAddress 地址 from stuinfo; | -| | [46](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_46) | ``` | -| | [47](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_47) | | -| | [48](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_48) | 3.查询学生分数表（stuexam）中的学号，笔试和机试三列的信息，并为这三列取中文名字 | -| | [49](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_49) | | -| | [50](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_50) | ```mysql | -| | [51](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_51) | select stuNO 学号,writtenExam 笔试,labExam 机试 from stuexam; | -| | [52](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_52) | ``` | -| | [53](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_53) | | -| | [54](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_54) | 5.查询学生分数表（stuexam）中的学生的学号，笔试，机试以及总分这四列的信息 | -| | [55](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_55) | | -| | [56](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_56) | ```mysql | -| | [57](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_57) | select stuNO 学号,writtenExam 笔试,labExam 机试,writtenExam+labExam 总分 from stuexam; | -| | [58](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_58) | ``` | -| | [59](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_59) | | -| | [60](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_60) | 6.查询学生信息表（stuInfo）中学生来自哪几个地方 | -| | [61](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_61) | | -| | [62](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_62) | ```mysql | -| | [63](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_63) | select distinct stuAddress from stuinfo; | -| | [64](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_64) | ``` | -| | [65](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_65) | | -| | [66](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_66) | 7.查询学生信息表（stuInfo）中学生有哪几种年龄，并为该列取对应的中文列名 | -| | [67](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_67) | | -| | [68](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_68) | ```mysql | -| | [69](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_69) | select stuAge 年龄 from stuinfo group by stuAge; | -| | [70](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_70) | ``` | -| | [71](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_71) | | -| | [72](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_72) | 8.查询学生信息表（stuInfo）中前3行记录 | -| | [73](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_73) | | -| | [74](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_74) | ```mysql | -| | [75](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_75) | select * from stuinfo limit 0,3; | -| | [76](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_76) | ``` | -| | [77](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_77) | | -| | [78](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_78) | 9.查询学生信息表（stuInfo）中前4个学生的姓名和座位号 | -| | [79](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_79) | | -| | [80](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_80) | ```mysql | -| | [81](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_81) | select stuName,stuSeat from stuinfo limit 0,4; | -| | [82](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_82) | ``` | -| | [83](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_83) | | -| | [84](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_84) | 11.将地址是湖北武汉，年龄是20的学生的所有信息查询出来 | -| | [85](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_85) | | -| | [86](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_86) | ```mysql | -| | [87](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_87) | select * from stuinfo where stuAddress='湖北武汉' and stuAge=20; | -| | [88](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_88) | ``` | -| | [89](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_89) | | -| | [90](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_90) | 12.将机试成绩在60-80之间的信息查询出来，并按照机试成绩降序排列 | -| | [91](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_91) | | -| | [92](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_92) | ```mysql | -| | [93](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_93) | select * from stuexam where labExam between 60 and 80 order by labExam desc; | -| | [94](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_94) | ``` | -| | [95](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_95) | | -| | [96](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_96) | 13.查询来自湖北武汉或者湖南长沙的学生的所有信息 | -| | [97](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_97) | | -| | [98](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_98) | ```mysql | -| | [99](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_99) | select * from stuinfo where stuAddress='湖北武汉' or stuAddress='湖南长沙'; | -| | [100](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_100) | ``` | -| | [101](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_101) | | -| | [102](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_102) | 14.查询出笔试成绩不在70-90之间的信息,并按照笔试成绩升序排列 | -| | [103](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_103) | | -| | [104](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_104) | ```mysql | -| | [105](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_105) | select * from stuexam where writtenExam not between 70 and 90 order by writtenExam asc; | -| | [106](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_106) | ``` | -| | [107](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_107) | | -| | [108](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_108) | 15.查询年龄没有写的学生所有信息 | -| | [109](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_109) | | -| | [110](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_110) | ```mysql | -| | [111](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_111) | select * from stuinfo where stuAge is null; | -| | [112](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_112) | ``` | -| | [113](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_113) | | -| | [114](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_114) | 16.查询年龄写了的学生所有信息 | -| | [115](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_115) | | -| | [116](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_116) | ```mysql | -| | [117](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_117) | select * from stuinfo where stuage is not null; | -| | [118](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_118) | ``` | -| | [119](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_119) | | -| | [120](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_120) | 17.查询姓张的学生信息 | -| | [121](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_121) | | -| | [122](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_122) | ```mysql | -| | [123](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_123) | select * from stuinfo where stuName like '张%'; | -| | [124](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_124) | ``` | -| | [125](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_125) | | -| | [126](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_126) | 18.查询学生地址中有‘湖’字的信息 | -| | [127](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_127) | | -| | [128](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_128) | ```mysql | -| | [129](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_129) | select * from stuinfo where stuAddress like '%湖%'; | -| | [130](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_130) | ``` | -| | [131](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_131) | | -| | [132](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_132) | 19.查询姓张但名为一个字的学生信息 | -| | [133](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_133) | | -| | [134](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_134) | ```mysql | -| | [135](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_135) | select * from stuinfo where stuName like '张_'; | -| | [136](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_136) | ``` | -| | [137](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_137) | | -| | [138](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_138) | 20.查询姓名中第三个字为‘俊’的学生的信息，‘俊’后面有多少个字不限制 | -| | [139](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_139) | | -| | [140](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_140) | ```mysql | -| | [141](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_141) | select * from stuinfo where stuname like '__俊%'; | -| | [142](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_142) | ``` | -| | [143](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_143) | | -| | [144](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_144) | 21.按学生的年龄降序显示所有学生信息 | -| | [145](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_145) | | -| | [146](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_146) | ```mysql | -| | [147](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_147) | select * from stuinfo order by stuAge desc; | -| | [148](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_148) | ``` | -| | [149](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_149) | | -| | [150](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_150) | 22.按学生的年龄降序和座位号升序来显示所有学生的信息 | -| | [151](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_151) | | -| | [152](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_152) | ```mysql | -| | [153](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_153) | select * from stuinfo order by stuAge desc,stuSeat asc; | -| | [154](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_154) | ``` | -| | [155](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_155) | | -| | [156](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_156) | 23显示笔试第一名的学生的考试号，学号，笔试成绩和机试成绩 | -| | [157](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_157) | | -| | [158](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_158) | ```mysql | -| | [159](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_159) | select examNO,a.stuNO,writtenExam,labExam from stuinfo a right join stuexam b on a.stuno=b.stuNO where writtenExam=(select max(writtenExam) from stuexam); | -| | [160](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_160) | ``` | -| | [161](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_161) | | -| | [162](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_162) | 24.显示机试倒数第一名的学生的考试号，学号，笔试成绩和机试成绩 | -| | [163](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_163) | | -| | [164](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_164) | ```mysql | -| | [165](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_165) | select examNO,a.stuNO,writtenExam,labExam from stuinfo a right join stuexam b on a.stuno=b.stuNO where labExam=(select min(labExam) from stuexam); | -| | [166](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_166) | ``` | -| | [167](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_167) | | -| | [168](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_168) | 25.查询每个地方的学生的平均年龄 | -| | [169](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_169) | | -| | [170](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_170) | ```mysql | -| | [171](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_171) | select stuAddress,round(avg(stuAge),2) 平均年龄 from stuinfo group by stuAddress; | -| | [172](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_172) | ``` | -| | [173](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_173) | | -| | [174](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_174) | 26.查询男女生的分别的年龄总和 | -| | [175](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_175) | | -| | [176](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_176) | ```mysql | -| | [177](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_177) | select stuSex,sum(stuAge) 年龄总和 from stuinfo group by stuSex; | -| | [178](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_178) | ``` | -| | [179](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_179) | | -| | [180](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_180) | 27.查询每个地方的男女生的平均年龄和年龄的总和 | -| | [181](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_181) | | -| | [182](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_182) | ```mysql | -| | [183](https://gitee.com/huai-jie/mysql-base/commit/85f7d0704f718eda30d55e5fcff6ed232b7b803d#ab7e5c484dd66a33cfa46e85cec56cfd4a2bfebe_0_183) | select stuSex,round(avg(stuAge),2) 平均年龄,sum(stuAge) 年龄总和 from stuinfo group by stuSex; | \ No newline at end of file diff --git "a/19\345\275\255\345\213\207\346\226\214/\344\275\234\344\270\232.md" "b/19\345\275\255\345\213\207\346\226\214/\344\275\234\344\270\232.md" new file mode 100644 index 0000000..d6cb99e --- /dev/null +++ "b/19\345\275\255\345\213\207\346\226\214/\344\275\234\344\270\232.md" @@ -0,0 +1,184 @@ +``` +create database studen charset utf8; +use studen; +create table stuinfo( + stuNO varchar(11) primary key, + stuName varchar(11) unique key not null, + stuAge int not null, + stuAddress varchar(11) not null, + stuSeat int not null, + stuSex int not null +); +create table stuexam( + examNO int not null unique key auto_increment, + stuNO varchar(11) primary key, + writtenExam int not null, + labExam int not null, + foreign key (stuNO) references stuinfo(stuNO) +); +insert into stuinfo values +('s2501','张秋利',20,'美国硅谷',1,1), +('s2502','李斯文',18,'湖北武汉',2,0), +('s2503','马文才',22,'湖南长沙',3,1), +('s2504','欧阳俊雄',21,'湖北武汉',4,0), +('s2505','梅超风',20,'湖北武汉',5,1), +('s2506','陈旋风',19,'美国硅谷',6,1), +('s2507','陈风',20,'美国硅谷',7,0); +insert into stuexam values +(1,'s2501',50,70), +(2,'s2502',60,65), +(3,'s2503',86,85), +(4,'s2504',40,80), +(5,'s2505',70,90), +(6,'s2506',85,90); +``` + +1.查询学生信息表（stuinfo）中所有列信息，给每列取上中文名称 + +``` +select stuNO 学号,stuName 姓名,stuAge 年龄,stuAddress 地址,stuSeat 号数,stuSex 性别 from stuinfo; +``` + +2.查询学生信息表（stuinfo）中的姓名，年龄和地址三列的信息 + +``` +select stuName 姓名,stuAge 年龄,stuAddress 地址 from stuinfo; +``` + +3.查询学生分数表（stuexam）中的学号，笔试和机试三列的信息，并为这三列取中文名字 + +``` +select stuNO 学号,writtenExam 笔试,labExam 机试 from stuexam; +``` + +5.查询学生分数表（stuexam）中的学生的学号，笔试，机试以及总分这四列的信息 + +``` +select stuNO 学号,writtenExam 笔试,labExam 机试,writtenExam+labExam 总分 from stuexam; +``` + +6.查询学生信息表（stuInfo）中学生来自哪几个地方 + +``` +select distinct stuAddress from stuinfo; +``` + +7.查询学生信息表（stuInfo）中学生有哪几种年龄，并为该列取对应的中文列名 + +``` +select stuAge 年龄 from stuinfo group by stuAge; +``` + +8.查询学生信息表（stuInfo）中前3行记录 + +``` +select * from stuinfo limit 0,3; +``` + +9.查询学生信息表（stuInfo）中前4个学生的姓名和座位号 + +``` +select stuName,stuSeat from stuinfo limit 0,4; +``` + +11.将地址是湖北武汉，年龄是20的学生的所有信息查询出来 + +``` +select * from stuinfo where stuAddress='湖北武汉' and stuAge=20; +``` + +12.将机试成绩在60-80之间的信息查询出来，并按照机试成绩降序排列 + +``` +select * from stuexam where labExam between 60 and 80 order by labExam desc; +``` + +13.查询来自湖北武汉或者湖南长沙的学生的所有信息 + +``` +select * from stuinfo where stuAddress='湖北武汉' or stuAddress='湖南长沙'; +``` + +14.查询出笔试成绩不在70-90之间的信息,并按照笔试成绩升序排列 + +``` +select * from stuexam where writtenExam not between 70 and 90 order by writtenExam asc; +``` + +15.查询年龄没有写的学生所有信息 + +``` +select * from stuinfo where stuAge is null; +``` + +16.查询年龄写了的学生所有信息 + +``` +select * from stuinfo where stuage is not null; +``` + +17.查询姓张的学生信息 + +``` +select * from stuinfo where stuName like '张%'; +``` + +18.查询学生地址中有‘湖’字的信息 + +``` +select * from stuinfo where stuAddress like '%湖%'; +``` + +19.查询姓张但名为一个字的学生信息 + +``` +select * from stuinfo where stuName like '张_'; +``` + +20.查询姓名中第三个字为‘俊’的学生的信息，‘俊’后面有多少个字不限制 + +``` +select * from stuinfo where stuname like '__俊%'; +``` + +21.按学生的年龄降序显示所有学生信息 + +``` +select * from stuinfo order by stuAge desc; +``` + +22.按学生的年龄降序和座位号升序来显示所有学生的信息 + +``` +select * from stuinfo order by stuAge desc,stuSeat asc; +``` + +23显示笔试第一名的学生的考试号，学号，笔试成绩和机试成绩 + +``` +select examNO,a.stuNO,writtenExam,labExam from stuinfo a right join stuexam b on a.stuno=b.stuNO where writtenExam=(select max(writtenExam) from stuexam); +``` + +24.显示机试倒数第一名的学生的考试号，学号，笔试成绩和机试成绩 + +``` +select examNO,a.stuNO,writtenExam,labExam from stuinfo a right join stuexam b on a.stuno=b.stuNO where labExam=(select min(labExam) from stuexam); +``` + +25.查询每个地方的学生的平均年龄 + +``` +select stuAddress,round(avg(stuAge),2) 平均年龄 from stuinfo group by stuAddress; +``` + +26.查询男女生的分别的年龄总和 + +``` +select stuSex,sum(stuAge) 年龄总和 from stuinfo group by stuSex; +``` + +27.查询每个地方的男女生的平均年龄和年龄的总和 + +``` +select stuSex,round(avg(stuAge),2) 平均年龄,sum(stuAge) 年龄总和 from stuinfo group by stuSex; +``` \ No newline at end of file -- Gitee