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RDBのNULLはアンチパターン

Sponsored · Ship Features Fearlessly Turn features on and off without deploys. Used by thousands of Ruby developers. →
Avatar for Ryutaro Ryutaro
September 30, 2024
Programming
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 RDBのNULLはアンチパターン

Avatar for Ryutaro

Ryutaro

September 30, 2024

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  14. 結果: Empty set (空が返ってくる )

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  17. 結果: Empty set (空が返ってくる )

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