SELECT DISTINCT

`SELECT DISTINCT` is a clause used in SQL queries to retrieve only unique values from a table or a result set. It filters out duplicate records and returns only one instance of each unique record. For example, if you have a table of sales data and you want to retrieve a list of distinct product names, you can use `SELECT DISTINCT product_name FROM sales_data`.

" DISTINCT" is a SQL statement used to retrieve unique or distinct values from a database table. It eliminates any duplicate rows that might exist in the result set. For example, if you have a table named "customers" with columns "id", "name", and "email", you can use the following SQL query to retrieve a list of distinct email addresses: ``` SELECT DISTINCT email FROM customers; ``` This would return a list of unique email addresses from the "customers" table.

select distinct

select distinct是一种SQL查询语句，用于从数据库中选择不重复的行。它可以应用于一个或多个列，以确保查询结果中的每一行都是唯一的。\[1\]例如，使用select distinct可以查询出所有不同的id、name或其他列的值。如果在where子句中使用select distinct并且没有返回结果，那么查询结果将为空。\[2\]另外，使用select distinct还可以选择特定的字段进行筛选，只返回所需的字段的查询结果。\[3\] #### 引用[.reference_title] - *1* *2* [select distinct 语句详解](https://blog.csdn.net/good_good_xiu/article/details/115399279)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^control_2,239^v3^insert_chatgpt"}} ] [.reference_item] - *3* [5. Select/Select distinct语句以及Where子句的写法](https://blog.csdn.net/zyypjc/article/details/127050051)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^control_2,239^v3^insert_chatgpt"}} ] [.reference_item] [ .reference_list ]

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SELECT DISTINCT

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