Upgrade to Pro — share decks privately, control downloads, hide ads and more …

RDBのNULLはアンチパターン

Avatar for Ryutaro Ryutaro
September 30, 2024
Programming
130
0

 RDBのNULLはアンチパターン

Avatar for Ryutaro

Ryutaro

September 30, 2024

More Decks by Ryutaro

See All by Ryutaro
Gemini for Google Cloud で出来ること
Avatar for Ryutaro ryutarohoriuchi
0
42

Other Decks in Programming

See All in Programming
Spec Driven Development | AI Summit Vilnius
Avatar for Daniel Sogl danielsogl
PRO
1
150
From Formal Specification to Property Based Test
Avatar for Masato Ohba ohbarye
0
2.4k
AI時代だからこそ「Bloc」を採用する価値があるのかもしれない
Avatar for takuro abe takuroabe
0
150
20年以上続くプロダクトでも使い続けられる静的解析ツールを求めて
Avatar for Atsushi Matsuo matsuo_atsushi
0
150
ソースコード→AST→オペコード、の旅を覗いてみる
Avatar for hideki kinjyo o0h
PRO
1
130
t *testing.T は どこからやってくるの？
Avatar for Kotaro Otaka otakakot
1
930
ハーネスエンジニアリングとは？
Avatar for kinopee kinopeee
13
6.9k
【ディップ｜26年新卒研修資料】OpenAPI/Swagger REST API研修
Avatar for ディップ株式会社 dip_tech
PRO
0
150
AI Agent と正しく分析するための環境作り
Avatar for yosh_yumyum yoshyum
2
380
〜バイブコーディングを超えて〜 チームで実験し続けたAI駆動開発
Avatar for Toranosuke Minamikawa tigertora7571
0
200
Kingdom of the Machine
Avatar for yui-knk yui_knk
2
1.5k
Terraform言語の静的解析 / static analysis of Terraform language
Avatar for Kazuma Watanabe wata727
1
140

Featured

See All Featured
Fashionably flexible responsive web design (full day workshop)
Avatar for Andy Clarke malarkey
408
66k
The browser strikes back
Avatar for Jono Alderson jonoalderson
0
1k
Jess Joyce - The Pitfalls of Following Frameworks
Avatar for Tech SEO Connect techseoconnect
PRO
1
150
Large-scale JavaScript Application Architecture
Avatar for Addy Osmani addyosmani
515
110k
Discover your Explorer Soul
Avatar for Emna emna__ayadi
2
1.1k
Dominate Local Search Results - an insider guide to GBP, reviews, and Local SEO
Avatar for Greg Gifford greggifford
PRO
0
170
The Power of CSS Pseudo Elements
Avatar for Geoffrey Crofte geoffreycrofte
82
6.2k
AI in Enterprises - Java and Open Source to the Rescue
Avatar for ivargrimstad ivargrimstad
0
1.3k
First, design no harm
Avatar for Per Axbom axbom
PRO
2
1.2k
Connecting the Dots Between Site Speed, User Experience & Your Business [WebExpo 2025]
Avatar for Tammy Everts tammyeverts
11
910
Automating Front-end Workflow
Avatar for Addy Osmani addyosmani
1370
200k
It's Worth the Effort
Avatar for 3n 3n
188
29k

Transcript

  1. None
  2. None
  3. None
  4. None
  5. None
  6. None
  7. None
  8. None
  9. None
  10. None
  11. None
  12. None
  13. None

  14. 結果: Empty set (空が返ってくる )

  15. None
  16. None

  17. 結果: Empty set (空が返ってくる )

  18. None
  19. None
  20. None
  21. None
  22. None
  23. None
  24. None
  25. None
  26. None
  27. None
  28. None
  29. None
  30. None