{"id":189332,"date":"2024-11-12T06:48:18","date_gmt":"2024-11-11T22:48:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/189332\/"},"modified":"2024-11-12T06:48:19","modified_gmt":"2024-11-11T22:48:19","slug":"%e5%90%8c%e8%a1%a8%e5%a4%9a%e6%ac%a1%e6%9f%a5%e8%a9%a2%e4%b8%8d%e5%90%8c%e6%97%b6%e6%ae%b5%e6%95%b8%e6%93%9a%e7%9a%84oracle%e5%89%b5%e5%bb%ba%e8%a6%96%e5%9c%96%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/189332\/","title":{"rendered":"\u540c\u8868\u591a\u6b21\u67e5\u8a62\u4e0d\u540c\u65f6\u6bb5\u6578\u64da\u7684oracle\u5275\u5efa\u8996\u5716\u65b9\u6cd5"},"content":{"rendered":"<h1 id=\"%e5%90%8c%e8%a1%a8%e5%a4%9a%e6%ac%a1%e6%9f%a5%e8%a9%a2%e4%b8%8d%e5%90%8c%e6%97%b6%e6%ae%b5%e6%95%b8%e6%93%9a%e7%9a%84oracle%e5%89%b5%e5%bb%ba%e8%a6%96%e5%9c%96%e6%96%b9%e6%b3%95-EDNdKPwLlN\">\u540c\u8868\u591a\u6b21\u67e5\u8a62\u4e0d\u540c\u65f6\u6bb5\u6578\u64da\u7684Oracle\u5275\u5efa\u8996\u5716\u65b9\u6cd5<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u67e5\u8a62\u540c\u4e00\u8868\u683c\u7684\u4e0d\u540c\u6642\u9593\u6bb5\u6578\u64da\u662f\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\u3002Oracle\u6578\u64da\u5eab\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u8996\u5716\u529f\u80fd\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u7c21\u5316\u9019\u4e00\u904e\u7a0b\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728Oracle\u4e2d\u5275\u5efa\u8996\u5716\uff0c\u4ee5\u4fbf\u65bc\u591a\u6b21\u67e5\u8a62\u540c\u4e00\u8868\u683c\u7684\u4e0d\u540c\u6642\u9593\u6bb5\u6578\u64da\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e8%a6%96%e5%9c%96%ef%bc%9f-EDNdKPwLlN\">\u4ec0\u9ebc\u662f\u8996\u5716\uff1f<\/h2>\n<p>\u8996\u5716\u662f\u57fa\u65bcSQL\u67e5\u8a62\u7684\u865b\u64ec\u8868\u683c\u3002\u5b83\u4e0d\u5b58\u5132\u6578\u64da\uff0c\u800c\u662f\u5f9e\u4e00\u500b\u6216\u591a\u500b\u57fa\u790e\u8868\u4e2d\u52d5\u614b\u751f\u6210\u6578\u64da\u3002\u4f7f\u7528\u8996\u5716\u7684\u597d\u8655\u5305\u62ec\uff1a\u7c21\u5316\u8907\u96dc\u67e5\u8a62\u3001\u63d0\u9ad8\u6578\u64da\u5b89\u5168\u6027\u4ee5\u53ca\u63d0\u4f9b\u6578\u64da\u7684\u4e0d\u540c\u8996\u89d2\u3002<\/p>\n<h2 id=\"%e5%89%b5%e5%bb%ba%e8%a6%96%e5%9c%96%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-EDNdKPwLlN\">\u5275\u5efa\u8996\u5716\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u5728Oracle\u4e2d\uff0c\u5275\u5efa\u8996\u5716\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>CREATE VIEW view_name AS\nSELECT column1, column2, ...\nFROM table_name\nWHERE condition;<\/code><\/pre>\n<p>\u9019\u88e1\uff0c<code>view_name<\/code>\u662f\u4f60\u8981\u5275\u5efa\u7684\u8996\u5716\u540d\u7a31\uff0c<code>column1, column2, ...<\/code>\u662f\u4f60\u5e0c\u671b\u5728\u8996\u5716\u4e2d\u986f\u793a\u7684\u5217\uff0c<code>table_name<\/code>\u662f\u57fa\u790e\u8868\u7684\u540d\u7a31\uff0c<code>condition<\/code>\u662f\u904e\u6ffe\u6578\u64da\u7684\u689d\u4ef6\u3002<\/p>\n<h2 id=\"%e6%9f%a5%e8%a9%a2%e4%b8%8d%e5%90%8c%e6%99%82%e9%96%93%e6%ae%b5%e6%95%b8%e6%93%9a%e7%9a%84%e8%a6%96%e5%9c%96%e7%a4%ba%e4%be%8b-EDNdKPwLlN\">\u67e5\u8a62\u4e0d\u540c\u6642\u9593\u6bb5\u6578\u64da\u7684\u8996\u5716\u793a\u4f8b<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba<code>sales<\/code>\u7684\u8868\u683c\uff0c\u8a72\u8868\u683c\u5305\u542b\u4ee5\u4e0b\u5217\uff1a<code>sale_id<\/code>\u3001<code>sale_date<\/code>\u3001<code>amount<\/code>\u3002\u6211\u5011\u5e0c\u671b\u5275\u5efa\u4e00\u500b\u8996\u5716\uff0c\u4ee5\u4fbf\u80fd\u5920\u67e5\u8a62\u7279\u5b9a\u6642\u9593\u6bb5\u5167\u7684\u92b7\u552e\u6578\u64da\u3002<\/p>\n<h3 id=\"%e5%89%b5%e5%bb%ba%e8%a6%96%e5%9c%96-EDNdKPwLlN\">\u5275\u5efa\u8996\u5716<\/h3>\n<p>\u4ee5\u4e0b\u662f\u5275\u5efa\u4e00\u500b\u540d\u70ba<code>monthly_sales_view<\/code>\u7684\u8996\u5716\u7684\u793a\u4f8b\uff0c\u8a72\u8996\u5716\u986f\u793a\u6bcf\u6708\u7684\u92b7\u552e\u7e3d\u984d\uff1a<\/p>\n<pre><code>CREATE VIEW monthly_sales_view AS\nSELECT TO_CHAR(sale_date, 'YYYY-MM') AS sale_month,\n       SUM(amount) AS total_sales\nFROM sales\nGROUP BY TO_CHAR(sale_date, 'YYYY-MM');<\/code><\/pre>\n<p>\u9019\u500b\u8996\u5716\u5c07\u6839\u64da\u92b7\u552e\u65e5\u671f\u5c07\u6578\u64da\u6309\u6708\u5206\u7d44\uff0c\u4e26\u8a08\u7b97\u6bcf\u500b\u6708\u7684\u7e3d\u92b7\u552e\u984d\u3002<\/p>\n<h3 id=\"%e6%9f%a5%e8%a9%a2%e8%a6%96%e5%9c%96-EDNdKPwLlN\">\u67e5\u8a62\u8996\u5716<\/h3>\n<p>\u5275\u5efa\u8996\u5716\u5f8c\uff0c\u6211\u5011\u53ef\u4ee5\u8f15\u9b06\u67e5\u8a62\u4e0d\u540c\u6642\u9593\u6bb5\u7684\u6578\u64da\u3002\u4f8b\u5982\uff0c\u67e5\u8a622023\u5e741\u6708\u7684\u92b7\u552e\u7e3d\u984d\uff1a<\/p>\n<pre><code>SELECT total_sales\nFROM monthly_sales_view\nWHERE sale_month = '2023-01';<\/code><\/pre>\n<h2 id=\"%e5%a4%9a%e6%ac%a1%e6%9f%a5%e8%a9%a2%e4%b8%8d%e5%90%8c%e6%99%82%e9%96%93%e6%ae%b5%e7%9a%84%e6%95%b8%e6%93%9a-EDNdKPwLlN\">\u591a\u6b21\u67e5\u8a62\u4e0d\u540c\u6642\u9593\u6bb5\u7684\u6578\u64da<\/h2>\n<p>\u5982\u679c\u6211\u5011\u9700\u8981\u67e5\u8a62\u591a\u500b\u6642\u9593\u6bb5\u7684\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528<code>UNION<\/code>\u64cd\u4f5c\u7b26\u4f86\u5408\u4f75\u591a\u500b\u67e5\u8a62\u3002\u4f8b\u5982\uff0c\u67e5\u8a622023\u5e741\u6708\u548c2023\u5e742\u6708\u7684\u92b7\u552e\u7e3d\u984d\uff1a<\/p>\n<pre><code>SELECT sale_month, total_sales\nFROM monthly_sales_view\nWHERE sale_month IN ('2023-01', '2023-02');<\/code><\/pre>\n<p>\u9019\u6a23\uff0c\u6211\u5011\u5c31\u80fd\u5920\u5728\u4e00\u500b\u67e5\u8a62\u4e2d\u7372\u5f97\u591a\u500b\u6642\u9593\u6bb5\u7684\u6578\u64da\uff0c\u5f9e\u800c\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-EDNdKPwLlN\">\u7e3d\u7d50<\/h2>\n<p>\u5728Oracle\u4e2d\u5275\u5efa\u8996\u5716\u662f\u4e00\u7a2e\u6709\u6548\u7684\u65b9\u5f0f\uff0c\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u7c21\u5316\u67e5\u8a62\u904e\u7a0b\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u67e5\u8a62\u540c\u4e00\u8868\u683c\u7684\u4e0d\u540c\u6642\u9593\u6bb5\u6578\u64da\u6642\u3002\u901a\u904e\u4f7f\u7528\u8996\u5716\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u548c\u958b\u767c\u8005\u53ef\u4ee5\u66f4\u8f15\u9b06\u5730\u7372\u53d6\u6240\u9700\u7684\u4fe1\u606f\uff0c\u4e26\u63d0\u9ad8\u6578\u64da\u67e5\u8a62\u7684\u9748\u6d3b\u6027\u548c\u6548\u7387\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5728Oracle\u4e2d\u9032\u884c\u66f4\u9ad8\u6548\u7684\u6578\u64da\u7ba1\u7406\u611f\u8208\u8da3\uff0c\u6216\u8005\u9700\u8981\u9ad8\u6027\u80fd\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u6578\u64da\u5eab\u64cd\u4f5c\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5728Oracle\u4e2d\u5275\u5efa\u8996\u5716\uff0c\u4ee5\u4fbf\u540c\u6642\u67e5\u8a62\u591a\u500b\u6642\u6bb5\u7684\u6578\u64da\uff0c\u63d0\u5347\u6578\u64da\u5206\u6790\u6548\u7387\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-189332","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/189332","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=189332"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/189332\/revisions"}],"predecessor-version":[{"id":189333,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/189332\/revisions\/189333"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=189332"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=189332"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=189332"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}