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add limit to import into #18603

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Sep 11, 2024
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add limit to import into #18603

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D3Hunter Sep 10, 2024
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Update sql-statement-import-into.md
hfxsd Sep 10, 2024
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1 change: 1 addition & 0 deletions sql-statements/sql-statement-import-into.md
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Expand Up @@ -17,6 +17,7 @@ summary: TiDB 数据库中 IMPORT INTO 的使用概况。
## 使用限制

- 只支持导入数据到数据库中已有的空表。
- 不支持导入到[临时表](/temporary-tables.md)或者[缓存表](/cached-tables.md)。
- 不支持事务，也无法回滚。在显式事务 (`BEGIN`/`END`) 中执行会报错。
- 不支持和 [Backup & Restore](/br/backup-and-restore-overview.md)、[`FLASHBACK CLUSTER`](/sql-statements/sql-statement-flashback-cluster.md)、[创建索引加速](/system-variables.md#tidb_ddl_enable_fast_reorg-从-v630-版本开始引入)、TiDB Lightning 导入、TiCDC 数据同步、[Point-in-time recovery (PITR)](/br/br-log-architecture.md) 等功能同时工作。相关兼容性介绍，请参见 [`IMPORT INTO` 和 TiDB Lightning 与日志备份和 TiCDC 的兼容性](/tidb-lightning/tidb-lightning-compatibility-and-scenarios.md)。
- 导入数据的过程中，请勿在目标表上执行 DDL 和 DML 操作，也不要在目标数据库上执行 [`FLASHBACK DATABASE`](/sql-statements/sql-statement-flashback-database.md)，否则会导致导入失败或数据不一致。导入期间也不建议进行读操作，因为读取的数据可能不一致。请在导入完成后再进行读写操作。
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