{"id":5753,"date":"2024-11-14T10:19:32","date_gmt":"2024-11-14T02:19:32","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5753\/"},"modified":"2024-11-14T10:19:32","modified_gmt":"2024-11-14T02:19:32","slug":"oracle%e7%89%a9%e5%8c%96%e8%a7%86%e5%9b%be%e6%80%8e%e4%b9%88%e8%ae%be%e7%bd%ae","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5753\/","title":{"rendered":"oracle\u7269\u5316\u89c6\u56fe\u600e\u4e48\u8bbe\u7f6e"},"content":{"rendered":"

\n \u7269\u5316\u89c6\u56fe\u662f\u9884\u5148\u8ba1\u7b97\u7684\u57fa\u7840\u8868\u526f\u672c\uff0c\u53ef\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u8bbe\u7f6e\uff1a\u521b\u5efa\u57fa\u7840\u8868\u4f7f\u7528 sql \u8bed\u53e5\u521b\u5efa\u7269\u5316\u89c6\u56fe\u5b9a\u671f\u5237\u65b0\u7269\u5316\u89c6\u56fe\u4ee5\u5305\u542b\u6700\u65b0\u6570\u636e\u3002\n<\/p><\/blockquote>\n

\"oracle\u7269\u5316\u89c6\u56fe\u600e\u4e48\u8bbe\u7f6e\u63d2\u56fe\"<\/p>\n

Oracle \u7269\u5316\u89c6\u56fe\u8bbe\u7f6e\u6307\u5357<\/strong><\/p>\n

\u4ec0\u4e48\u662f\u7269\u5316\u89c6\u56fe\uff1f<\/strong><\/p>\n

\u7269\u5316\u89c6\u56fe\u662f\u5b58\u50a8\u5728\u6570\u636e\u5e93\u4e2d\u5bf9\u57fa\u7840\u8868\u7684\u9884\u8ba1\u7b97\u7ed3\u679c\u7684\u53ea\u8bfb\u526f\u672c\u3002\u5b83\u53ef\u4ee5\u63d0\u9ad8\u9700\u8981\u9891\u7e41\u8bbf\u95ee\u76f8\u540c\u6570\u636e\u96c6\u7684\u67e5\u8be2\u7684\u6027\u80fd\u3002<\/p>\n

\u5982\u4f55\u8bbe\u7f6e\u7269\u5316\u89c6\u56fe\uff1f<\/strong><\/p>\n

\u6b65\u9aa4 1\uff1a\u521b\u5efa\u57fa\u7840\u8868<\/strong><\/p>\n

\u521b\u5efa\u8981\u4e3a\u5176\u521b\u5efa\u7269\u5316\u89c6\u56fe\u7684\u57fa\u7840\u8868\u3002<\/p>\n

\u6b65\u9aa4 2\uff1a\u521b\u5efa\u7269\u5316\u89c6\u56fe<\/strong><\/p>\n

\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u521b\u5efa\u7269\u5316\u89c6\u56fe\uff1a<\/p>\n

CREATE MATERIALIZED VIEW [\u7269\u5316\u89c6\u56fe\u540d\u79f0] AS\nSELECT [\u5217\u540d]\nFROM [\u57fa\u7840\u8868\u540d\u79f0]\n[\u5176\u4ed6\u67e5\u8be2\u6761\u4ef6]<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4f8b\u5982\uff1a<\/p>\n
CREATE MATERIALIZED VIEW sales_mv AS\nSELECT product_id, sum(quantity) AS total_sales\nFROM sales\nGROUP BY product_id;<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6b65\u9aa4 3\uff1a\u5237\u65b0\u7269\u5316\u89c6\u56fe<\/strong><\/p>\n
\u521b\u5efa\u540e\uff0c\u7269\u5316\u89c6\u56fe\u9700\u8981\u5237\u65b0\uff0c\u4ee5\u4fbf\u5305\u542b\u6700\u65b0\u6570\u636e\u3002\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u5237\u65b0\u7269\u5316\u89c6\u56fe\uff1a<\/p>\n
REFRESH MATERIALIZED VIEW [\u7269\u5316\u89c6\u56fe\u540d\u79f0];<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u53ef\u9009\u6b65\u9aa4\uff1a\u5efa\u7acb\u7d22\u5f15<\/strong><\/p>\n
\u5728\u7269\u5316\u89c6\u56fe\u4e0a\u5efa\u7acb\u7d22\u5f15\u53ef\u4ee5\u8fdb\u4e00\u6b65\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd\u3002\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u5efa\u7acb\u7d22\u5f15\uff1a<\/p>\n
CREATE INDEX [\u7d22\u5f15\u540d\u79f0] ON [\u7269\u5316\u89c6\u56fe\u540d\u79f0] ([\u5217\u540d]);<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u63d0\u793a\uff1a<\/strong><\/p>\n
    \n
  • \u7269\u5316\u89c6\u56fe\u7684\u540d\u79f0\u5fc5\u987b\u4e0e\u57fa\u7840\u8868\u7684\u540d\u79f0\u4e0d\u540c\u3002<\/li>\n
  • \u7269\u5316\u89c6\u56fe\u53ef\u4ee5\u5305\u542b\u6765\u81ea\u591a\u4e2a\u57fa\u7840\u8868\u7684\u5217\u3002<\/li>\n
  • \u53ef\u4ee5\u4f7f\u7528\u67e5\u8be2\u6761\u4ef6\u6765\u7b5b\u9009\u7269\u5316\u89c6\u56fe\u4e2d\u5305\u542b\u7684\u6570\u636e\u3002<\/li>\n
  • \u7269\u5316\u89c6\u56fe\u9700\u8981\u5b9a\u671f\u5237\u65b0\uff0c\u4ee5\u53cd\u6620\u57fa\u7840\u8868\u4e2d\u7684\u4efb\u4f55\u66f4\u6539\u3002<\/li>\n
  • \u6839\u636e\u7269\u5316\u89c6\u56fe\u7684\u5927\u5c0f\u548c\u5237\u65b0\u9891\u7387\u6765\u8003\u8651\u5b58\u50a8\u6210\u672c\u3002<\/li>\n<\/ul>\n
    \u4ee5\u4e0a\u5c31\u662f\u7269\u5316\u89c6\u56fe\u600e\u4e48\u8bbe\u7f6e\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":"
    \u7269\u5316\u89c6\u56fe\u662f\u9884\u5148\u8ba1\u7b97\u7684\u57fa\u7840\u8868\u526f\u672c\uff0c\u53ef\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u8bbe\u7f6e\uff1a\u521b\u5efa\u57fa\u7840\u8868\u4f7f\u7528 sql \u8bed\u53e5\u521b\u5efa\u7269\u5316\u89c6\u56fe\u5b9a\u671f\u5237\u65b0\u7269\u5316\u89c6\u56fe\u4ee5\u5305\u542b\u6700\u65b0\u6570\u636e\u3002 Oracle \u7269\u5316\u89c6\u56fe\u8bbe\u7f6e\u6307\u5357 \u4ec0\u4e48\u662f\u7269\u5316\u89c6\u56fe\uff1f \u7269\u5316\u89c6\u56fe\u662f\u5b58\u50a8\u5728\u6570\u636e\u5e93\u4e2d\u5bf9\u57fa\u7840\u8868\u7684\u9884\u8ba1\u7b97\u7ed3\u679c\u7684\u53ea\u8bfb\u526f\u672c\u3002\u5b83\u53ef\u4ee5\u63d0\u9ad8\u9700\u8981\u9891\u7e41\u8bbf\u95ee\u76f8\u540c\u6570\u636e\u96c6\u7684\u67e5\u8be2\u7684\u6027\u80fd\u3002 \u5982\u4f55\u8bbe\u7f6e\u7269\u5316\u89c6\u56fe\uff1f \u6b65\u9aa4 1\uff1a\u521b\u5efa\u57fa\u7840\u8868 \u521b\u5efa\u8981\u4e3a\u5176\u521b\u5efa\u7269\u5316\u89c6\u56fe\u7684\u57fa\u7840\u8868\u3002 \u6b65\u9aa4 2\uff1a\u521b\u5efa\u7269\u5316\u89c6\u56fe \u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u521b\u5efa\u7269\u5316\u89c6\u56fe\uff1a CREATE MATERIALIZED VIEW [\u7269\u5316\u89c6\u56fe\u540d\u79f0] AS SELECT [\u5217\u540d] FROM [\u57fa\u7840\u8868\u540d\u79f0] [\u5176\u4ed6\u67e5\u8be2\u6761\u4ef6] \u767b\u5f55\u540e\u590d\u5236 \u4f8b\u5982\uff1a CREATE MATERIALIZED VIEW sales_mv AS SELECT product_id, sum(quantity) AS total_sales FROM sales GROUP BY product_id; \u767b\u5f55\u540e\u590d\u5236 \u6b65\u9aa4 3\uff1a\u5237\u65b0\u7269\u5316\u89c6\u56fe \u521b\u5efa\u540e\uff0c\u7269\u5316\u89c6\u56fe\u9700\u8981\u5237\u65b0\uff0c\u4ee5\u4fbf\u5305\u542b\u6700\u65b0\u6570\u636e\u3002\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u5237\u65b0\u7269\u5316\u89c6\u56fe\uff1a REFRESH MATERIALIZED VIEW [\u7269\u5316\u89c6\u56fe\u540d\u79f0]; \u767b\u5f55\u540e\u590d\u5236 \u53ef\u9009\u6b65\u9aa4\uff1a\u5efa\u7acb\u7d22\u5f15 \u5728\u7269\u5316\u89c6\u56fe\u4e0a\u5efa\u7acb\u7d22\u5f15\u53ef\u4ee5\u8fdb\u4e00\u6b65\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd\u3002\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u5efa\u7acb\u7d22\u5f15\uff1a CREATE INDEX [\u7d22\u5f15\u540d\u79f0] […]<\/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-5753","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5753","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=5753"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5753\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5753"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5753"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5753"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}