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select distinct语句 去重
2022-04-22 21:08:00 【头发在风中哭泣】
SELECT DISTINCT
在表中,一个列可能会包含多个重复值,有时您也许希望仅仅列出不同(distinct)的值。
distinct 关键词用于返回唯一不同的值。
SELECT DISTINCT column_name FROM table_name;
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https://blog.csdn.net/weixin_40350981/article/details/124345077
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