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                # DML 語句概述 DML(Data Manipulation Language,數據操作語言)語句可以操作表中的數據,如增加、修改、刪除等。 **說明** 在 obclient 命令行環境下,可以在“SQL提示符>”后輸入 DML 語句。 DML 語句對數據的修改效果只有在提交事務時才永久生效。一個事務是一序列被 OceanBase 數據庫當作整體的多個 SQL 語句,要么全部執行成功,要么全部不成功。單個 DML 語句也可以是一個事務。事務在沒有提交之前,還可以回滾事務。
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