Why MySQL’s utf8 Isn’t Real UTF‑8 and How utf8mb4 Fixes Emoji Insertion Errors

This article explains why MySQL's default utf8 charset cannot store four‑byte characters such as emojis, demonstrates the resulting insertion error, and shows how switching to the utf8mb4 charset resolves the issue while also covering the historical reasons behind MySQL's limited utf8 implementation.

Character SetEmojiSQL

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Why MySQL’s utf8 Isn’t Real UTF‑8 and How utf8mb4 Fixes Emoji Insertion Errors

Laravel Tech Community

Nov 22, 2021 · Databases

Understanding MySQL utf8 vs utf8mb4: Handling Emoji and Unicode Characters

This article explains why inserting emoji into MySQL fails with the default utf8 charset, demonstrates how switching to utf8mb4 resolves the issue, and provides a historical overview of MySQL's limited utf8 implementation and the proper use of true UTF‑8 encoding.

Character SetEmojiUnicode

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Understanding MySQL utf8 vs utf8mb4: Handling Emoji and Unicode Characters

macrozheng

Aug 20, 2020 · Databases

Why MySQL’s utf8 Isn’t Real UTF‑8 and How utf8mb4 Fixes Emoji Errors

The article explains why MySQL’s built‑in utf8 charset only supports up to three‑byte characters, causing insert errors with four‑byte emojis, and shows how switching tables, system, and connection settings to utf8mb4 resolves the issue while detailing the historical reasons behind this limitation.

Character SetEmojidatabase encoding

0 likes · 9 min read