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update MD by dispatch event pingcap/docs-cn release-8.5
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github-actions committed Jan 24, 2025
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6 changes: 6 additions & 0 deletions markdown-pages/zh/tidb/release-8.5/tidb-limitations.md
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Expand Up @@ -56,6 +56,12 @@ summary: TiDB 中的使用限制包括标识符长度限制、数据库、表、
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| Size | 默认为 6 MiB,可通过 [`txn-entry-size-limit`](/tidb-configuration-file.md#txn-entry-size-limit-从-v4010-和-v500-版本开始引入) 配置项调至 120 MiB |

## 索引的限制

索引的最大长度为 3072 字节,相当于使用 4 字节 UTF-8 编码时的 768 个字符。

你可以通过 [`max-index-length`](/tidb-configuration-file.md#max-index-length) 配置项调整此限制。

## 数据类型限制

| 类型 | 最大限制 |
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