{"id":33524,"date":"2023-06-08T11:05:10","date_gmt":"2023-06-08T03:05:10","guid":{"rendered":"https:\/\/docs.pingcode.com\/?p=33524"},"modified":"2023-07-31T00:26:14","modified_gmt":"2023-07-30T16:26:14","slug":"oracle-mysql%e6%95%b0%e6%8d%ae%e5%ba%93%e5%88%9b%e5%bb%ba%e7%b4%a2%e5%bc%95%e7%9a%84%e5%8e%9f%e5%88%99%e6%98%af%e4%bb%80%e4%b9%88","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/33524.html","title":{"rendered":"Oracle\/MySQL\u6570\u636e\u5e93\u521b\u5efa\u7d22\u5f15\u7684\u539f\u5219\u662f\u4ec0\u4e48"},"content":{"rendered":"
\n

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\n
\"\"<\/figure>\n<\/div>\n

\u4e00\u3001Oracle\/MySQL\u6570\u636e\u5e93\u521b\u5efa\u7d22\u5f15\u7684\u539f\u5219<\/strong><\/h2>\n

\u8bf4\u8bf4\u6240\u7406\u89e3\u7684\u5427\uff0c\u9996\u5148\u8981\u660e\u767d\u5bf9\u4e8e\u7d22\u5f15\u7684\u5b9a\u4e49\u63cf\u8ff0\u3002MySQL\/Oracle\u4e2d\u7684\u7684\u7d22\u5f15\u662f\u5bf9\u6570\u636e\u5e93\u8868\u4e2d\u4e00\u4e2a\u6216\u591a\u4e2a\u5217\u7684\u503c\u8fdb\u884c\u6392\u5e8f\u7684\u7ed3\u6784\u3002\u7d22\u5f15\u6709\u52a9\u4e8e\u66f4\u5feb\u7684\u83b7\u53d6\u4fe1\u606f\u3002\u662f\u7528\u6765\u5b9a\u4f4d\u7684\u3002<\/p>\n

\u5bf9\u8868\u4e2d\u7684\u5217\u662f\u5426\u521b\u5efa\u7d22\u5f15\uff0c\u4ee5\u53ca\u521b\u5efa\u4f55\u79cd\u7d22\u5f15\uff0c\u5bf9\u4e8e\u67e5\u8be2\u7684\u54cd\u5e94\u901f\u5ea6\u4f1a\u6709\u5f88\u5927\u5dee\u522b\u3002\u521b\u5efa\u4e86\u7d22\u5f15\u7684\u5217\u51e0\u4e4e\u662f\u7acb\u5373\u54cd\u5e94\uff0c\u800c\u4e0d\u521b\u5efa\u7d22\u5f15\u7684\u5217\u5219\u9700\u8981\u8f83\u957f\u65f6\u95f4\u7684\u7b49\u5f85\u3002<\/p>\n

\u5728\u6570\u636e\u5e93\u7cfb\u7edf\u4e2d\u521b\u5efa\u7d22\u5f15\u4e3b\u8981\u6709\u4ee5\u4e0b\u4f5c\u7528\uff1a<\/p>\n

\u2460 \u52a0\u5feb\u6570\u636e\u68c0\u7d22\uff1b<\/p>\n

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\u2463 \u5728\u4f7f\u7528GROUP BY\u3001ORDER BY\u5b50\u53e5\u8fdb\u884c\u67e5\u8be2\u65f6\uff0c\u5229\u7528\u7d22\u5f15\u53ef\u4ee5\u51cf\u5c11\u6392\u5e8f\u548c\u5206\u7ec4\u7684\u65f6\u95f4\u3002<\/p>\n

\u7d22\u5f15\u662f\u5426\u5fc5\u987b\uff1f<\/p>\n

1\u3001\u521b\u5efa\u7d22\u5f15\u9700\u8981\u5360\u7528\u6570\u636e\u7a7a\u95f4\u5e76\u82b1\u8d39\u4e00\u5b9a\u7684\u65f6\u95f4<\/p>\n

2\u3001\u5efa\u7acb\u7d22\u5f15\u4f1a\u51cf\u6162\u6570\u636e\u4fee\u6539\u901f\u5ea6<\/p>\n

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\u9009\u62e9\u521b\u5efa\u7d22\u5f15\u7684\u6570\u636e\u5217\uff1a<\/p>\n

a.\u5b9a\u4e49\u6709\u4e3b\u952e\u548c\u5916\u952e\u7684\u5217<\/p>\n

b.\u5728\u6307\u5b9a\u8303\u56f4\u4e2d\u5feb\u901f\u6216\u9891\u7e41\u67e5\u8be2\u7684\u5217<\/p>\n

c.\u8fde\u63a5\u4e2d\u9891\u7e41\u4f7f\u7528\u7684\u5217<\/p>\n

d.\u9700\u8981\u6309\u6392\u5e8f\u987a\u5e8f\u5feb\u901f\u6216\u9891\u7e41\u68c0\u7d22\u7684\u5217<\/p>\n

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\uff082\uff09\u907f\u514d\u5bf9\u7ecf\u5e38\u66f4\u65b0\u7684\u8868\u8fdb\u884c\u8fc7\u591a\u7684\u7d22\u5f15\uff0c\u5e76\u4e14\u7d22\u5f15\u5e94\u4fdd\u6301\u8f83\u7a84\u3002<\/p>\n

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\u5ef6\u4f38\u9605\u8bfb\uff1a<\/strong><\/p>\n

\u4e8c\u3001<\/strong>\u5b57\u7b26\u96c6(Character set)\u662f\u4ec0\u4e48<\/strong><\/h2>\n

\u662f\u591a\u4e2a\u5b57\u7b26(\u82f1\u6587\u5b57\u7b26\uff0c\u6c49\u5b57\u5b57\u7b26\uff0c\u6216\u8005\u5176\u4ed6\u56fd\u5bb6\u8bed\u8a00\u5b57\u7b26)\u7684\u96c6\u5408\uff0c\u5b57\u7b26\u96c6\u79cd\u7c7b\u8f83\u591a\uff0c\u6bcf\u4e2a\u5b57\u7b26\u96c6\u5305\u542b\u7684\u5b57\u7b26\u4e2a\u6570\u4e0d\u540c\u3002<\/p>\n

\u7279\u70b9\uff1a<\/p>\n

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\u5e38\u89c1\u5b57\u7b26\u96c6\uff1a<\/p>\n

ASCII\u5b57\u7b26\u96c6\uff1a\u57fa\u4e8e\u7f57\u9a6c\u5b57\u6bcd\u8868\u7684\u4e00\u5957\u5b57\u7b26\u96c6\uff0c\u5b83\u91c7\u75281\u4e2a\u5b57\u8282\u7684\u4f4e7\u4f4d\u8868\u793a\u5b57\u7b26\uff0c\u9ad8\u4f4d\u59cb\u7ec8\u4e3a0\u3002<\/p>\n

LATIN1\u5b57\u7b26\u96c6\uff1a\u76f8\u5bf9\u4e8eASCII\u5b57\u7b26\u96c6\u505a\u4e86\u6269\u5c55\uff0c\u4ecd\u7136\u4f7f\u7528\u4e00\u4e2a\u5b57\u8282\u8868\u793a\u5b57\u7b26\uff0c\u4f46\u542f\u7528\u4e86\u9ad8\u4f4d\uff0c\u6269\u5c55\u4e86\u5b57\u7b26\u96c6\u7684\u8868\u793a\u8303\u56f4\u3002<\/p>\n

GBK\u5b57\u7b26\u96c6\uff1a\u652f\u6301\u4e2d\u6587\uff0c\u5b57\u7b26\u6709\u4e00\u5b57\u8282\u7f16\u7801\u548c\u4e24\u5b57\u8282\u7f16\u7801\u65b9\u5f0f\u3002<\/p>\n

UTF8\u5b57\u7b26\u96c6\uff1aUnicode\u5b57\u7b26\u96c6\u7684\u4e00\u79cd\uff0c\u662f\u8ba1\u7b97\u673a\u79d1\u5b66\u9886\u57df\u91cc\u7684\u4e00\u9879\u4e1a\u754c\u6807\u51c6\uff0c\u652f\u6301\u4e86\u6240\u6709\u56fd\u5bb6\u7684\u6587\u5b57\u5b57\u7b26\uff0cutf8\u91c7\u75281-4\u4e2a\u5b57\u8282\u8868\u793a\u5b57\u7b26\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u8bf4\u8bf4\u6240\u7406\u89e3\u7684\u5427\uff0c\u9996\u5148\u8981\u660e\u767d\u5bf9\u4e8e\u7d22\u5f15\u7684\u5b9a\u4e49\u63cf\u8ff0\u3002MySQL\/Oracle\u4e2d\u7684\u7684\u7d22\u5f15\u662f\u5bf9\u6570\u636e\u5e93\u8868\u4e2d\u4e00\u4e2a\u6216\u591a\u4e2a\u5217\u7684\u503c […]","protected":false},"author":1,"featured_media":33525,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/33524"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=33524"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/33524\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/33525"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=33524"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=33524"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=33524"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}