{"id":179178,"date":"2024-11-08T23:39:19","date_gmt":"2024-11-08T15:39:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/179178\/"},"modified":"2024-11-08T23:39:20","modified_gmt":"2024-11-08T15:39:20","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9-postgresql-%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc%ef%bc%9ap0001-raise_exception%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/179178\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1aP0001 &#8211; raise_exception\uff1f"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9-postgresql-%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc%ef%bc%9ap0001-raise_exception-zYBXqPleUv\">\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1aP0001 &#8211; raise_exception<\/h1>\n<p>\u5728\u4f7f\u7528 PostgreSQL \u6578\u64da\u5eab\u6642\uff0c\u958b\u767c\u8005\u53ef\u80fd\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\u4ee3\u78bc\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f P0001\u3002\u9019\u500b\u932f\u8aa4\u4ee3\u78bc\u901a\u5e38\u8207 PL\/pgSQL \u4e2d\u7684\u4f8b\u5916\u8655\u7406\u6709\u95dc\uff0c\u7279\u5225\u662f\u5728\u4f7f\u7528 <code>RAISE EXCEPTION<\/code> \u8a9e\u53e5\u6642\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e P0001 \u932f\u8aa4\u7684\u539f\u56e0\u53ca\u5176\u4fee\u5fa9\u65b9\u6cd5\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u6709\u6548\u5730\u8655\u7406\u9019\u4e00\u554f\u984c\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af-p0001-%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc%ef%bc%9f-zYBXqPleUv\">\u4ec0\u9ebc\u662f P0001 \u932f\u8aa4\u4ee3\u78bc\uff1f<\/h2>\n<p>P0001 \u932f\u8aa4\u4ee3\u78bc\u662f PostgreSQL \u4e2d\u7684\u4e00\u500b\u901a\u7528\u932f\u8aa4\u4ee3\u78bc\uff0c\u8868\u793a\u5728 PL\/pgSQL \u7684\u57f7\u884c\u904e\u7a0b\u4e2d\u767c\u751f\u4e86\u4f8b\u5916\u60c5\u6cc1\u3002\u7576\u4f7f\u7528 <code>RAISE EXCEPTION<\/code> \u8a9e\u53e5\u6642\uff0c\u9019\u500b\u932f\u8aa4\u4ee3\u78bc\u6703\u88ab\u89f8\u767c\uff0c\u4e26\u4e14\u901a\u5e38\u4f34\u96a8\u8457\u4e00\u689d\u63cf\u8ff0\u6027\u932f\u8aa4\u6d88\u606f\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u7406\u89e3\u554f\u984c\u7684\u6839\u6e90\u3002<\/p>\n<h2 id=\"%e5%b8%b8%e8%a6%8b%e7%9a%84%e8%a7%b8%e7%99%bc%e6%83%85%e6%b3%81-zYBXqPleUv\">\u5e38\u898b\u7684\u89f8\u767c\u60c5\u6cc1<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u53ef\u80fd\u5c0e\u81f4 P0001 \u932f\u8aa4\u7684\u5e38\u898b\u60c5\u6cc1\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u9a57\u8b49\u5931\u6557\uff1a<\/strong>\u7576\u63d2\u5165\u6216\u66f4\u65b0\u6578\u64da\u6642\uff0c\u5982\u679c\u6578\u64da\u4e0d\u7b26\u5408\u9810\u8a2d\u7684\u7d04\u675f\u689d\u4ef6\uff0c\u5247\u53ef\u80fd\u6703\u89f8\u767c <code>RAISE EXCEPTION<\/code>\u3002<\/li>\n<li><strong>\u696d\u52d9\u908f\u8f2f\u932f\u8aa4\uff1a<\/strong>\u5728 PL\/pgSQL \u51fd\u6578\u4e2d\uff0c\u5982\u679c\u696d\u52d9\u908f\u8f2f\u4e0d\u6b63\u78ba\uff0c\u958b\u767c\u8005\u53ef\u80fd\u6703\u4e3b\u52d5\u4f7f\u7528 <code>RAISE EXCEPTION<\/code> \u4f86\u5831\u544a\u932f\u8aa4\u3002<\/li>\n<li><strong>\u8cc7\u6e90\u4e0d\u53ef\u7528\uff1a<\/strong>\u4f8b\u5982\uff0c\u7576\u5617\u8a66\u8a2a\u554f\u4e00\u500b\u4e0d\u5b58\u5728\u7684\u8868\u6216\u5217\u6642\uff0c\u4e5f\u6703\u5f15\u767c\u6b64\u932f\u8aa4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9-p0001-%e9%8c%af%e8%aa%a4-zYBXqPleUv\">\u5982\u4f55\u4fee\u5fa9 P0001 \u932f\u8aa4<\/h2>\n<p>\u4fee\u5fa9 P0001 \u932f\u8aa4\u7684\u7b2c\u4e00\u6b65\u662f\u78ba\u5b9a\u932f\u8aa4\u7684\u5177\u9ad4\u539f\u56e0\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u4fee\u5fa9\u65b9\u6cd5\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5%e6%95%b8%e6%93%9a%e7%b4%84%e6%9d%9f-zYBXqPleUv\">1. \u6aa2\u67e5\u6578\u64da\u7d04\u675f<\/h3>\n<p>\u5982\u679c\u932f\u8aa4\u662f\u7531\u65bc\u6578\u64da\u7d04\u675f\u5931\u6557\u5f15\u8d77\u7684\uff0c\u8acb\u6aa2\u67e5\u76f8\u95dc\u8868\u7684\u7d04\u675f\u689d\u4ef6\u3002\u4f8b\u5982\uff0c\u78ba\u4fdd\u63d2\u5165\u7684\u6578\u64da\u4e0d\u6703\u9055\u53cd\u552f\u4e00\u6027\u7d04\u675f\u6216\u5916\u9375\u7d04\u675f\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u67e5\u8a62\u4f86\u6aa2\u67e5\u8868\u7684\u7d04\u675f\uff1a<\/p>\n<pre><code>SELECT conname, contype\nFROM pg_constraint\nWHERE conrelid = 'your_table_name'::regclass;<\/code><\/pre>\n<h3 id=\"2-%e8%aa%bf%e8%a9%a6-pl-pgsql-%e5%87%bd%e6%95%b8-zYBXqPleUv\">2. \u8abf\u8a66 PL\/pgSQL \u51fd\u6578<\/h3>\n<p>\u5982\u679c\u932f\u8aa4\u4f86\u81ea PL\/pgSQL \u51fd\u6578\uff0c\u5efa\u8b70\u4f7f\u7528 <code>RAISE NOTICE<\/code> \u8a9e\u53e5\u4f86\u8f38\u51fa\u8abf\u8a66\u4fe1\u606f\uff0c\u5e6b\u52a9\u5b9a\u4f4d\u554f\u984c\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>CREATE OR REPLACE FUNCTION your_function()\nRETURNS VOID AS $$\nBEGIN\n    RAISE NOTICE 'Debugging: value = %', your_variable;\n    -- \u5176\u4ed6\u908f\u8f2f\nEND;\n$$ LANGUAGE plpgsql;<\/code><\/pre>\n<h3 id=\"3-%e6%aa%a2%e6%9f%a5%e8%b3%87%e6%ba%90%e5%8f%af%e7%94%a8%e6%80%a7-zYBXqPleUv\">3. \u6aa2\u67e5\u8cc7\u6e90\u53ef\u7528\u6027<\/h3>\n<p>\u78ba\u4fdd\u6240\u6709\u9700\u8981\u7684\u8cc7\u6e90\uff08\u5982\u8868\u3001\u5217\u3001\u7d22\u5f15\u7b49\uff09\u90fd\u5b58\u5728\u4e14\u53ef\u7528\u3002\u53ef\u4ee5\u4f7f\u7528 <code>SELECT<\/code> \u8a9e\u53e5\u4f86\u78ba\u8a8d\u8cc7\u6e90\u7684\u5b58\u5728\u6027\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-zYBXqPleUv\">\u7d50\u8ad6<\/h2>\n<p>PostgreSQL \u7684 P0001 \u932f\u8aa4\u4ee3\u78bc\u901a\u5e38\u8207\u4f8b\u5916\u8655\u7406\u6709\u95dc\uff0c\u7406\u89e3\u5176\u80cc\u5f8c\u7684\u539f\u56e0\u662f\u4fee\u5fa9\u554f\u984c\u7684\u95dc\u9375\u3002\u901a\u904e\u6aa2\u67e5\u6578\u64da\u7d04\u675f\u3001\u8abf\u8a66 PL\/pgSQL \u51fd\u6578\u4ee5\u53ca\u78ba\u8a8d\u8cc7\u6e90\u7684\u53ef\u7528\u6027\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u9019\u4e00\u932f\u8aa4\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4e5f\u81f3\u95dc\u91cd\u8981\uff0c\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u5eab\u7684\u7a69\u5b9a\u6027\u548c\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc P0001 &#8211; raise_exception\uff0c\u89e3\u6c7a\u8cc7\u6599\u5eab\u7570\u5e38\u554f\u984c\uff0c\u63d0\u5347\u7cfb\u7d71\u7a69\u5b9a\u6027\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-179178","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179178","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=179178"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179178\/revisions"}],"predecessor-version":[{"id":179179,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179178\/revisions\/179179"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=179178"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=179178"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=179178"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}