2020-08-13 12:00:20 +02:00
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---
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id: 5e7b9f180b6c005b0e76f08f
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2021-07-02 18:45:29 +05:30
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title: '关系数据库：联接操作'
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2020-08-13 12:00:20 +02:00
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challengeType: 11
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videoId: jvDw3D9GKac
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2021-01-13 03:31:00 +01:00
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dashedName: relational-databases-join-operation
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2020-08-13 12:00:20 +02:00
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---
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2020-12-16 00:37:30 -07:00
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# --question--
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## --text--
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2021-07-02 18:45:29 +05:30
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在 SQL 语句中使用 JOIN 子句时，ON 的作用是什么？
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2020-12-16 00:37:30 -07:00
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## --answers--
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2021-07-02 18:45:29 +05:30
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它指示在哪些表上执行 JOIN。
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2020-12-16 00:37:30 -07:00
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---
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2021-07-02 18:45:29 +05:30
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它指定用于 JOIN 的字段。
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2020-12-16 00:37:30 -07:00
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---
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2021-07-02 18:45:29 +05:30
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它指示如何将两个表连接在一起。
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2020-12-16 00:37:30 -07:00
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## --video-solution--
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3
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