掃碼查看CDA認證考試介紹(俱樂部實踐部專屬推廣碼)

MySQL

1，Mysql徹底卸載干凈并重裝方法怎么操作? http://www.ruiqisteel.com/discuss/post/details/61604bdf977c04705c1273c7

2，MYSQL安裝時,starting the server出現紅色叉號. http://www.ruiqisteel.com/discuss/post/details/61978c262531444211a5c65c

3, MySQL 8.0 安裝教程（帶安裝包） https://edu.cda.cn/my/course/5013

4, CDA L1 mysql報錯Error Code: 1175. You are using safe update mode

http://www.ruiqisteel.com/discuss/post/details/63a4110de1840060d6346421

5, Mysql MAC版設置文件安全路徑目錄 http://www.ruiqisteel.com/discuss/post/details/64fb36b1e518fe26c1def8f6

6，mysql報錯 Error Code: 1175. You are using safe update mode

http://www.ruiqisteel.com/discuss/post/details/618d021321531d7654184ddb

7，CDA 數據分析師level1 學習筆記分享和學習資料分享 http://www.ruiqisteel.com/discuss/post/details/630c7b8e16506a5735ec622f

8， MySQL 8.0 安裝教程（帶安裝包） https://edu.cda.cn/my/course/5013

9，mysql階段測試代碼操作題的建表語句 http://www.ruiqisteel.com/discuss/post/details/631594bcd115607f262f6c10

10，安裝MySQL時在Initializing database步驟報錯 http://www.ruiqisteel.com/discuss/post/details/620cc51ccbeca03310eadf32

11, CDA 數據分析學習筆記 Mysql Error Code: 1046. No database selected

如何探索解決問題 三大方法論法寶 http://www.ruiqisteel.com/discuss/post/details/64226824e8194e566a31c195

12, CDA學習之關于MySQL建表后批量導入數據的示例說明(以CDA一級考試教材中的emp員工表導入為例)

http://www.ruiqisteel.com/discuss/post/details/64f980b7a7006e15447fa39c

13，CDA數據分析 L1模擬題 之SQL別名不能用于（　)什么子句中?

http://www.ruiqisteel.com/discuss/post/details/64898eeaa6be163b8e288f77

14，CDA學習之SQL中子查詢可以出現在以下（　)什么子句中？

http://www.ruiqisteel.com/discuss/post/details/652a5dc91a87b518465db4e2

15，CDA學習模擬題之SQL句子select deptid,avg(sal) from employee group by deptid HAVING job='clerk

http://www.ruiqisteel.com/discuss/post/details/6538e57d32d996713fe054ee

16，CDA一級SQL學習之要查詢“計算機” 系的沒有不及格成績的學生學號和姓名

http://www.ruiqisteel.com/discuss/post/details/65421437132c9c302d40d1d4

17,mysql系列學習35--開窗函數之mysql開窗函數默認情況

http://www.ruiqisteel.com/discuss/post/details/638763a040c7872f8fdf75b2

18, CDA學習之mysql報錯error 2013.Lost connection to MySQL server during query

http://www.ruiqisteel.com/discuss/post/details/65029dbe4985eb404bad66ef

19, MAC的win虛擬機裝mysql workbench的問題

http://www.ruiqisteel.com/discuss/post/details/6769082c04fbc66acf9fb9b1

20, CDA數據分析學習-Mysql workbench的查詢結果導出到Excel

https://zhuanlan.zhihu.com/p/686588571

21，CDA L1 當WHERE子句的（表子查詢中）查詢條件是聚合函數時，子查詢不能替換為連接查詢

http://www.ruiqisteel.com/discuss/post/details/6239d402bb49d9411dd4bc85

Excel

1, microsoft office安裝包(含exel) http://www.ruiqisteel.com/discuss/post/details/63709c5078e45138b580ba06

2，Excel:此數據透視表字段已被組合。不能向組合字段中添加計算項。

http://www.ruiqisteel.com/discuss/post/details/617626974eb98e2dc4278ecd

3，CDA數據分析學習之電子表格Excel OFFSET函數 http://www.ruiqisteel.com/discuss/post/details/64916fb2ead2ec45bf91b8cf

4，excel 當月有效工作天數=當月應工作天數–全無薪假期 http://www.ruiqisteel.com/discuss/post/details/633329d042da6b7f6b3165d9

5，Adventure works公司分析報告 http://www.ruiqisteel.com/discuss/post/details/631aba1a0e5bd02eedd06e7b

6， CDA 數據分析師level1 優質學習筆記分享和學習資料分享 http://www.ruiqisteel.com/discuss/post/details/630c7b8e16506a5735ec622f

7,CDA 數據分析學習之 Excel階段測試-[Excel材料實操式選擇題組合] 學生成績表和用戶消費表材料

http://www.ruiqisteel.com/discuss/post/details/650bf21c3985890a0fdcd10f

8，Excel可以是表結構處理工具嗎? http://www.ruiqisteel.com/discuss/post/details/661f87b422ffe46e409a718f

Python

1，關于jupyter notebook無法自動跳轉chrome瀏覽器的處理方法

http://www.ruiqisteel.com/discuss/post/details/618cd50f21531d7654184da7

2 , python給jupyter安裝目錄插件時報錯:Jupyter command `jupyter-contrib-nbextension` not found.

http://www.ruiqisteel.com/discuss/post/details/62b32191694342173bc68f74

3, Anaconda(學python用)安裝包以及安裝教程 https://edu.cda.cn/my/course/5014

4, python報錯,ERROR: Failed building wheel for xxx 和 Could not build wheels for xxx

http://www.ruiqisteel.com/discuss/post/details/643cfc810a60533776b07d09

5, CDA學習之python jupyter notebook安裝后, 輸入python代碼執行沒反應,而且in[ ]沒有*

http://www.ruiqisteel.com/discuss/post/details/64b3ada7f6b83a33b072c62f

6, Anaconda Python 配置環境變量 http://www.ruiqisteel.com/discuss/post/details/6294243702dd332204c7fa7f

7, CDA數據分析學習之jupyter啟動后打開網頁會導致cmd黑色命令框閃退從而導致jupyter網頁不能執行代碼 (涉及電腦用戶名中文改為英文)

http://www.ruiqisteel.com/discuss/post/details/64b65ef72fcc3e19ee620ede

BI

1,CDA答疑社區如何發帖?發帖后獲得積分如何兌換書籍禮品? http://www.ruiqisteel.com/discuss/post/details/634bbb0d877c307f4085ceff

2, 在CDA答疑社區如何發帖?發帖后獲得積分如何兌換書籍禮品 http://www.ruiqisteel.com/discuss/post/details/634bbb0d877c307f4085ceff

3, CDA L1 BI多維數據模型各種類型（星型、雪花、星座、交叉連接）http://www.ruiqisteel.com/discuss/post/details/63725d19939bb5764f6c642a

4, CDA L1 BI多維數據透視分析時表的連接(趙大7000,9000問題) http://www.ruiqisteel.com/discuss/post/details/63ac6811793659505be1d391

5，Window7電腦安裝PowerBI新版本出現報錯提示“AS Process PID=12552 has exited with ExitCode=-1073741511”問題如何解決？

http://www.ruiqisteel.com/discuss/post/details/61cea78c6276b453ec6fa08b

統計學

1, CDA L1 設隨機變量X~N(1,4),則P(-1<X<3)等于多少？ http://www.ruiqisteel.com/discuss/post/details/62b19b4b694342173bc68dd7

2, CDA level 1 題目學習筆記：正態分布與卡方分布的關系 http://www.ruiqisteel.com/discuss/post/details/630f65e4d763935cdf3dfdf4

3, CDA level 1 題目學習筆記：卡方分布除以卡方分布是F分布 http://www.ruiqisteel.com/discuss/post/details/630f732cd763935cdf3dfe1d

4，CDAlevel1模擬題--計算相關系數的方法 http://www.ruiqisteel.com/discuss/post/details/63142021d115607f262f6af3

5, CDA L1模擬題--某地區成年男子的體重X（kg)服從正態分布N（μ，σ2), 若已知P{X≤70}=0.5，P{X≤60}=0.25.

http://www.ruiqisteel.com/discuss/post/details/63a86915793659505be1d123

6, CDA L1學習筆記 關于四分位數與百分位數的計算 http://www.ruiqisteel.com/discuss/post/details/61e00e07191ad85df65eabc6

其他1

1, CDA L1 學習筆記，在RFM用戶分類中,在有限資金下為提高收入,應重點對哪一類用戶進行營銷？

http://www.ruiqisteel.com/discuss/post/details/63e1ffc732d6675b731e6933

2, CDA L1學習筆記 維度 度量 與指標 http://www.ruiqisteel.com/discuss/post/details/629420ea02dd332204c7fa7a

http://www.ruiqisteel.com/discuss/post/details/6823f3ec41dd61786f45c836

4, CDA L1 學習筆記 Mysql Error Code: 1046. No database selected 如何探索解決問題？三大方法論法寶

http://www.ruiqisteel.com/discuss/post/details/64226824e8194e566a31c195

其他2

1, graphviz應用程序的安裝 http://www.ruiqisteel.com/discuss/post/details/60191f6ab137f15823a966d9

2, 如何探索解決問題 三大方法論法寶http://www.ruiqisteel.com/discuss/post/details/64226824e8194e566a31c195

3 CDA學習 office安裝 KMS主機地址 http://www.ruiqisteel.com/discuss/post/details/6565bfbc37f889640b521d9f

4,英偉達chat with rtx 大模型本地部署安裝教程 http://www.ruiqisteel.com/discuss/post/details/65eeff3bb2900e3836d129c4

其他3 CDA持證人會員俱樂部
1,歡迎報名參加CDA數據分析師持證人會員分享和會員專訪活動，成功參與后可得500元現金及500CDA積分
http://www.ruiqisteel.com/discuss/post/details/671b0749dea3a15858f6d893

其他4
1，CDA公眾號教材勘誤說明 https://mp.weixin.qq.com/s/0kvWUnRezBTkcOJ-YDce7A

2,維克多阿濤技術博客文章備份鏈接
http://www.ruiqisteel.com/discuss/post/details/65029dbd4985eb404bad66ec

歡迎掃碼