This article introduces the SQL DELETE and UPDATE statements, which you can use to selectively delete or modify existing data in an Apache Derby database.

本文介绍 SQL DELETE 和 UPDATE 语句，您可以使用它们有选择地删除或修改 Apache Derby 数据库中的现有数据。

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The SQL delete statement enables you to identify (or restrict) the rows you want to delete through a WHERE clause.

SQL delete语句允许通过where子句识别(或限制)要删除的行。

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To update and delete XML data stored in DB2, you use SQL update and delete statements.

要更新和删除存储在DB 2中的XML数据，可使用SQL UPDATE和delete语句。

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