{"id":154777,"date":"2024-11-02T18:07:18","date_gmt":"2024-11-02T10:07:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/154777\/"},"modified":"2024-11-02T18:07:19","modified_gmt":"2024-11-02T10:07:19","slug":"%e5%a4%9a%e6%95%b8%e6%93%9a%e5%ba%ab%e7%af%a9%e9%81%b8%e6%8a%80%e5%b7%a7%e5%88%86%e4%ba%ab%ef%bc%88%e6%80%8e%e9%ba%bc%e5%90%8c%e6%99%82%e7%af%a9%e9%81%b8%e5%a4%9a%e5%80%8b%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/154777\/","title":{"rendered":"\u591a\u6578\u64da\u5eab\u7be9\u9078\u6280\u5de7\u5206\u4eab\uff08\u600e\u9ebc\u540c\u6642\u7be9\u9078\u591a\u500b\u6578\u64da\u5eab\uff09"},"content":{"rendered":"

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\u7406\u89e3\u6578\u64da\u5eab\u7be9\u9078\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n

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\u4f7f\u7528\u806f\u63a5\u67e5\u8a62<\/h2>\n

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SELECT a.column1, b.column2\nFROM database1.table1 AS a\nJOIN database2.table2 AS b ON a.id = b.foreign_id\nWHERE a.condition = 'value';<\/code><\/pre>\n
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\u4f7f\u7528\u5b50\u67e5\u8a62<\/h2>\n
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SELECT column1\nFROM database1.table1\nWHERE id IN (SELECT foreign_id FROM database2.table2 WHERE condition = 'value');<\/code><\/pre>\n
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\u4f7f\u7528\u6578\u64da\u5eab\u9023\u63a5\u5de5\u5177<\/h2>\n
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\u8003\u616e\u6578\u64da\u5eab\u7684\u6027\u80fd<\/h2>\n
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\u7d50\u8ad6<\/h2>\n
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\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u4f7f\u7528 \u9999\u6e2fVPS<\/a> \u9032\u884c\u6578\u64da\u5eab\u7ba1\u7406\u6709\u8208\u8da3\uff0c\u6216\u60f3\u4e86\u89e3\u66f4\u591a\u95dc\u65bc \u96f2\u4f3a\u670d\u5668<\/a> \u7684\u8cc7\u8a0a\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u6e90\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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