{"id":5052,"date":"2024-11-14T11:36:08","date_gmt":"2024-11-14T03:36:08","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5052\/"},"modified":"2024-11-14T11:36:08","modified_gmt":"2024-11-14T03:36:08","slug":"oracle%e5%88%86%e9%a1%b5%e6%85%a2%e6%80%8e%e4%b9%88%e5%8a%9e","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5052\/","title":{"rendered":"oracle\u5206\u9875\u6162\u600e\u4e48\u529e"},"content":{"rendered":"<blockquote><p>\n  oracle \u5206\u9875\u67e5\u8be2\u53d8\u6162\u7684\u539f\u56e0\u5305\u62ec\u5168\u8868\u626b\u63cf\u3001\u7d22\u5f15\u9009\u62e9\u6027\u5dee\u3001\u6392\u5e8f\u548c\u8fc7\u6ee4\u3001\u963b\u585e\u3001\u9ad8\u5e76\u53d1\u3002\u89e3\u51b3\u65b9\u6848\uff1a1. \u4f7f\u7528\u7d22\u5f15\uff0c\u4f18\u5316\u67e5\u8be2\uff0c2. \u51cf\u5c11\u963b\u585e\uff0c3. \u7ba1\u7406\u5e76\u53d1\uff0c4. \u5b9e\u65bd\u5176\u4ed6\u4f18\u5316\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202405\/21\/2024052113031911287.jpg\" class=\"aligncenter\" title=\"oracle\u5206\u9875\u6162\u600e\u4e48\u529e\u63d2\u56fe\" alt=\"oracle\u5206\u9875\u6162\u600e\u4e48\u529e\u63d2\u56fe\" \/><\/p>\n<p><strong>\u89e3\u51b3 Oracle \u5206\u9875\u6162\u7684\u65b9\u6cd5<\/strong><\/p>\n<p><strong>\u95ee\u9898\uff1a\u4e3a\u4ec0\u4e48\u6211\u7684 Oracle \u5206\u9875\u67e5\u8be2\u5f88\u6162\uff1f<\/strong><\/p>\n<p>\u5e38\u89c1\u7684\u5bfc\u81f4 Oracle \u5206\u9875\u67e5\u8be2\u53d8\u6162\u7684\u539f\u56e0\u5305\u62ec\uff1a<\/p>\n<ul>\n<li> <strong>\u5168\u8868\u626b\u63cf\uff1a<\/strong>\u67e5\u8be2\u672a\u4f7f\u7528\u7d22\u5f15\uff0c\u5bfc\u81f4 Oracle \u6267\u884c\u5168\u8868\u626b\u63cf\u3002<\/li>\n<li> <strong>\u7d22\u5f15\u9009\u62e9\u6027\u5dee\uff1a<\/strong>\u4f7f\u7528\u7684\u7d22\u5f15\u9009\u62e9\u6027\u8f83\u5dee\uff0c\u65e0\u6cd5\u6709\u6548\u7f29\u5c0f\u7ed3\u679c\u96c6\u3002<\/li>\n<li> <strong>\u6392\u5e8f\u548c\u8fc7\u6ee4\uff1a<\/strong>\u5206\u9875\u67e5\u8be2\u6d89\u53ca\u6392\u5e8f\u6216\u8fc7\u6ee4\uff0c\u8fd9\u4e9b\u64cd\u4f5c\u9700\u8981\u989d\u5916\u7684\u5904\u7406\u548c\u8d44\u6e90\u3002<\/li>\n<li> <strong>\u963b\u585e\uff1a<\/strong>\u5176\u4ed6\u4f1a\u8bdd\u6b63\u5728\u66f4\u65b0\u6216\u9501\u5b9a\u8868\uff0c\u5bfc\u81f4\u5206\u9875\u67e5\u8be2\u7b49\u5f85\u3002<\/li>\n<li> <strong>\u9ad8\u5e76\u53d1\uff1a<\/strong>\u5927\u91cf\u7684\u5e76\u53d1\u5206\u9875\u67e5\u8be2\u8bf7\u6c42\u5bfc\u81f4\u8d44\u6e90\u4e89\u7528\u3002<\/li>\n<\/ul>\n<p><strong>\u89e3\u51b3\u65b9\u6848\uff1a<\/strong><\/p>\n<p><strong>1. \u4f7f\u7528\u7d22\u5f15<\/strong><\/p>\n<ul>\n<li>\u786e\u4fdd\u5206\u9875\u67e5\u8be2\u8bed\u53e5\u4f7f\u7528\u4e86\u9002\u5f53\u7684\u7d22\u5f15\u3002<\/li>\n<li>\u5206\u6790\u8868\u4e0a\u7684\u6570\u636e\u5206\u5e03\uff0c\u5e76\u521b\u5efa\u5177\u6709\u9ad8\u9009\u62e9\u6027\u7684\u7d22\u5f15\u3002<\/li>\n<\/ul>\n<p><strong>2. \u4f18\u5316\u67e5\u8be2<\/strong><\/p>\n<ul>\n<li>\u907f\u514d\u4f7f\u7528 SELECT *\uff0c\u53ea\u9009\u62e9\u6240\u9700\u7684\u5217\u3002<\/li>\n<li>\u4f7f\u7528 WHERE \u5b50\u53e5\u8fc7\u6ee4\u7ed3\u679c\u96c6\uff0c\u51cf\u5c11\u8981\u5904\u7406\u7684\u6570\u636e\u91cf\u3002<\/li>\n<li>\u4f7f\u7528 ORDER BY \u548c OFFSET\/LIMIT \u5b50\u53e5\u8fdb\u884c\u5206\u9875\u3002<\/li>\n<\/ul>\n<p><strong>3. \u51cf\u5c11\u963b\u585e<\/strong><\/p>\n<ul>\n<li>\u907f\u514d\u5728\u5206\u9875\u67e5\u8be2\u4e2d\u5bf9\u8868\u8fdb\u884c\u66f4\u65b0\u6216\u5220\u9664\u64cd\u4f5c\u3002<\/li>\n<li>\u589e\u52a0\u6570\u636e\u5e93\u7684\u5e76\u53d1\u6027\uff0c\u4f8b\u5982\u901a\u8fc7\u589e\u52a0\u4f1a\u8bdd\u6216\u8c03\u4f18\u7b49\u5f85\u65f6\u95f4\u3002<\/li>\n<\/ul>\n<p><strong>4. \u7ba1\u7406\u5e76\u53d1<\/strong><\/p>\n<ul>\n<li>\u9650\u5236\u540c\u65f6\u6267\u884c\u7684\u5206\u9875\u67e5\u8be2\u8bf7\u6c42\u6570\u91cf\u3002<\/li>\n<li>\u4f7f\u7528\u8d1f\u8f7d\u5747\u8861\u5668\u6216\u4e2d\u95f4\u4ef6\u6765\u7ba1\u7406\u8bf7\u6c42\u8d1f\u8f7d\u3002<\/li>\n<\/ul>\n<p><strong>5. \u5176\u4ed6\u4f18\u5316<\/strong><\/p>\n<ul>\n<li>\u4f7f\u7528\u5206\u533a\u8868\u6765\u5c06\u6570\u636e\u62c6\u5206\u6210\u66f4\u5c0f\u7684\u5757\uff0c\u4ece\u800c\u63d0\u9ad8\u5206\u9875\u6548\u7387\u3002<\/li>\n<li>\u542f\u7528\u5e76\u884c\u67e5\u8be2\u4ee5\u5229\u7528\u591a\u4e2a CPU \u6838\u5fc3\u3002<\/li>\n<li>\u4f18\u5316\u6570\u636e\u5e93\u914d\u7f6e\uff0c\u4f8b\u5982\u589e\u52a0\u5185\u5b58\u6216\u8c03\u4f18\u7f13\u51b2\u533a\u5927\u5c0f\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5206\u9875\u6162\u600e\u4e48\u529e\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>oracle \u5206\u9875\u67e5\u8be2\u53d8\u6162\u7684\u539f\u56e0\u5305\u62ec\u5168\u8868\u626b\u63cf\u3001\u7d22\u5f15\u9009\u62e9\u6027\u5dee\u3001\u6392\u5e8f\u548c\u8fc7\u6ee4\u3001\u963b\u585e\u3001\u9ad8\u5e76\u53d1\u3002\u89e3\u51b3\u65b9\u6848\uff1a1. \u4f7f\u7528\u7d22\u5f15\uff0c\u4f18\u5316\u67e5\u8be2\uff0c2. \u51cf\u5c11\u963b\u585e\uff0c3. \u7ba1\u7406\u5e76\u53d1\uff0c4. \u5b9e\u65bd\u5176\u4ed6\u4f18\u5316\u3002 \u89e3\u51b3 Oracle \u5206\u9875\u6162\u7684\u65b9\u6cd5 \u95ee\u9898\uff1a\u4e3a\u4ec0\u4e48\u6211\u7684 Oracle \u5206\u9875\u67e5\u8be2\u5f88\u6162\uff1f \u5e38\u89c1\u7684\u5bfc\u81f4 Oracle \u5206\u9875\u67e5\u8be2\u53d8\u6162\u7684\u539f\u56e0\u5305\u62ec\uff1a \u5168\u8868\u626b\u63cf\uff1a\u67e5\u8be2\u672a\u4f7f\u7528\u7d22\u5f15\uff0c\u5bfc\u81f4 Oracle \u6267\u884c\u5168\u8868\u626b\u63cf\u3002 \u7d22\u5f15\u9009\u62e9\u6027\u5dee\uff1a\u4f7f\u7528\u7684\u7d22\u5f15\u9009\u62e9\u6027\u8f83\u5dee\uff0c\u65e0\u6cd5\u6709\u6548\u7f29\u5c0f\u7ed3\u679c\u96c6\u3002 \u6392\u5e8f\u548c\u8fc7\u6ee4\uff1a\u5206\u9875\u67e5\u8be2\u6d89\u53ca\u6392\u5e8f\u6216\u8fc7\u6ee4\uff0c\u8fd9\u4e9b\u64cd\u4f5c\u9700\u8981\u989d\u5916\u7684\u5904\u7406\u548c\u8d44\u6e90\u3002 \u963b\u585e\uff1a\u5176\u4ed6\u4f1a\u8bdd\u6b63\u5728\u66f4\u65b0\u6216\u9501\u5b9a\u8868\uff0c\u5bfc\u81f4\u5206\u9875\u67e5\u8be2\u7b49\u5f85\u3002 \u9ad8\u5e76\u53d1\uff1a\u5927\u91cf\u7684\u5e76\u53d1\u5206\u9875\u67e5\u8be2\u8bf7\u6c42\u5bfc\u81f4\u8d44\u6e90\u4e89\u7528\u3002 \u89e3\u51b3\u65b9\u6848\uff1a 1. \u4f7f\u7528\u7d22\u5f15 \u786e\u4fdd\u5206\u9875\u67e5\u8be2\u8bed\u53e5\u4f7f\u7528\u4e86\u9002\u5f53\u7684\u7d22\u5f15\u3002 \u5206\u6790\u8868\u4e0a\u7684\u6570\u636e\u5206\u5e03\uff0c\u5e76\u521b\u5efa\u5177\u6709\u9ad8\u9009\u62e9\u6027\u7684\u7d22\u5f15\u3002 2. \u4f18\u5316\u67e5\u8be2 \u907f\u514d\u4f7f\u7528 SELECT *\uff0c\u53ea\u9009\u62e9\u6240\u9700\u7684\u5217\u3002 \u4f7f\u7528 WHERE \u5b50\u53e5\u8fc7\u6ee4\u7ed3\u679c\u96c6\uff0c\u51cf\u5c11\u8981\u5904\u7406\u7684\u6570\u636e\u91cf\u3002 \u4f7f\u7528 ORDER BY \u548c OFFSET\/LIMIT \u5b50\u53e5\u8fdb\u884c\u5206\u9875\u3002 3. \u51cf\u5c11\u963b\u585e \u907f\u514d\u5728\u5206\u9875\u67e5\u8be2\u4e2d\u5bf9\u8868\u8fdb\u884c\u66f4\u65b0\u6216\u5220\u9664\u64cd\u4f5c\u3002 \u589e\u52a0\u6570\u636e\u5e93\u7684\u5e76\u53d1\u6027\uff0c\u4f8b\u5982\u901a\u8fc7\u589e\u52a0\u4f1a\u8bdd\u6216\u8c03\u4f18\u7b49\u5f85\u65f6\u95f4\u3002 4. \u7ba1\u7406\u5e76\u53d1 \u9650\u5236\u540c\u65f6\u6267\u884c\u7684\u5206\u9875\u67e5\u8be2\u8bf7\u6c42\u6570\u91cf\u3002 \u4f7f\u7528\u8d1f\u8f7d\u5747\u8861\u5668\u6216\u4e2d\u95f4\u4ef6\u6765\u7ba1\u7406\u8bf7\u6c42\u8d1f\u8f7d\u3002 5. \u5176\u4ed6\u4f18\u5316 \u4f7f\u7528\u5206\u533a\u8868\u6765\u5c06\u6570\u636e\u62c6\u5206\u6210\u66f4\u5c0f\u7684\u5757\uff0c\u4ece\u800c\u63d0\u9ad8\u5206\u9875\u6548\u7387\u3002 \u542f\u7528\u5e76\u884c\u67e5\u8be2\u4ee5\u5229\u7528\u591a\u4e2a CPU \u6838\u5fc3\u3002 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-5052","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5052","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=5052"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5052\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5052"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5052"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5052"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}