> For the complete documentation index, see [llms.txt](https://docs.postgresql.tw/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.postgresql.tw/11/the-sql-language/data-manipulation.md).

# 6. 資料處理

前一章討論了如何建立資料表和其他結構來保存資料。現在是把資料表填滿的時候了。本章介紹如何新增、更新和刪除資料表的資料。 下一章將會完整說明如何從資料庫中取回你遺落在裡面的資料。


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# Agent Instructions
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## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.postgresql.tw/11/the-sql-language/data-manipulation.md?ask=<question>
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Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
