{"id":6149,"date":"2024-11-14T13:21:56","date_gmt":"2024-11-14T05:21:56","guid":{"rendered":"https:\/\/fwq.ai\/blog\/6149\/"},"modified":"2024-11-14T13:21:56","modified_gmt":"2024-11-14T05:21:56","slug":"mysql%e5%88%86%e8%a1%a8%e6%97%b6%e5%a6%82%e4%bd%95%e6%9f%a5%e6%95%b0%e6%8d%ae","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/6149\/","title":{"rendered":"mysql\u5206\u8868\u65f6\u5982\u4f55\u67e5\u6570\u636e"},"content":{"rendered":"<p><strong>\u5206\u8868\u67e5\u8be2\u6570\u636e<\/strong><\/p>\n<p>\u5f53\u6570\u636e\u5e93\u8868\u7684\u6570\u636e\u91cf\u8f83\u5927\u65f6\uff0c\u4e3a\u4e86\u63d0\u9ad8\u67e5\u8be2\u6548\u7387\uff0c\u53ef\u4ee5\u91c7\u7528\u5206\u8868\u7b56\u7565\uff0c\u5373\u5c06\u4e00\u5f20\u5927\u8868\u62c6\u5206\u4e3a\u591a\u4e2a\u5c0f\u8868\u3002\u5728\u5206\u8868\u60c5\u51b5\u4e0b\uff0c\u67e5\u8be2\u6570\u636e\u9700\u8981\u8003\u8651\u5206\u8868\u89c4\u5219\uff0c\u4ee5\u4fdd\u8bc1\u67e5\u8be2\u7ed3\u679c\u7684\u6b63\u786e\u6027\u3002<\/p>\n<p><strong>\u5206\u8868\u89c4\u5219<\/strong><\/p>\n<p>\u5206\u8868\u89c4\u5219\u51b3\u5b9a\u4e86\u6570\u636e\u5728\u4e0d\u540c\u8868\u4e4b\u95f4\u7684\u5206\u5e03\u65b9\u5f0f\uff0c\u5e38\u89c1\u7684\u89c4\u5219\u6709\uff1a<\/p>\n<ul>\n<li> <strong>\u8303\u56f4\u5206\u8868\uff1a<\/strong>\u6839\u636e\u6570\u636e\u8303\u56f4\u5c06\u6570\u636e\u5206\u5e03\u5230\u4e0d\u540c\u7684\u8868\u4e2d\uff0c\u4f8b\u5982\u6309\u7528\u6237ID\u5206\u8868\u3002<\/li>\n<li> <strong>\u54c8\u5e0c\u5206\u8868\uff1a<\/strong>\u6839\u636e\u6570\u636e\u54c8\u5e0c\u503c\u5c06\u6570\u636e\u5206\u5e03\u5230\u4e0d\u540c\u7684\u8868\u4e2d\uff0c\u4f8b\u5982\u6309\u7528\u6237\u90ae\u7bb1\u54c8\u5e0c\u503c\u5206\u8868\u3002<\/li>\n<\/ul>\n<p><strong>\u67e5\u8be2\u6570\u636e<\/strong><\/p>\n<p><strong>\u5355\u8868\u67e5\u8be2<\/strong><\/p>\n<p>\u5982\u679c\u8981\u67e5\u8be2\u5355\u8868\u4e2d\u7684\u6570\u636e\uff0c\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u666e\u901a\u7684SQL\u8bed\u53e5\uff0c\u65e0\u9700\u8003\u8651\u5206\u8868\u89c4\u5219\u3002<\/p>\n<p><strong>\u591a\u8868\u67e5\u8be2<\/strong><\/p>\n<p>\u5f53\u9700\u8981\u67e5\u8be2\u591a\u4e2a\u5206\u8868\u7684\u6570\u636e\u65f6\uff0c\u9700\u8981\u5c06\u8fd9\u4e9b\u8868\u5173\u8054\u8d77\u6765\u3002\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u5b9e\u73b0\uff1a<\/p>\n<ul>\n<li> <strong>Union All\uff1a<\/strong>\u5c06\u5404\u4e2a\u5206\u8868\u7684\u6570\u636e\u901a\u8fc7UNION 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