{"id":178770,"date":"2024-11-08T20:45:23","date_gmt":"2024-11-08T12:45:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/178770\/"},"modified":"2024-11-08T20:45:24","modified_gmt":"2024-11-08T12:45:24","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9postgresql%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc%ef%bc%9a22033-invalid_sql_json_subscript%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/178770\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9PostgreSQL\u932f\u8aa4\u4ee3\u78bc\uff1a22033 &#8211; invalid_sql_json_subscript\uff1f"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9postgresql%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc%ef%bc%9a22033-invalid_sql_json_subscript-rVtHiBexVP\">\u5982\u4f55\u4fee\u5fa9PostgreSQL\u932f\u8aa4\u4ee3\u78bc\uff1a22033 &#8211; invalid_sql_json_subscript<\/h1>\n<p>\u5728\u4f7f\u7528PostgreSQL\u9032\u884c\u6578\u64da\u5eab\u7ba1\u7406\u6642\uff0c\u958b\u767c\u8005\u53ef\u80fd\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\u4ee3\u78bc\uff0c\u5176\u4e2d\u4e4b\u4e00\u4fbf\u662f\u932f\u8aa4\u4ee3\u78bc22033\uff0c\u8a72\u932f\u8aa4\u901a\u5e38\u8207\u7121\u6548\u7684SQL JSON\u4e0b\u6a19\u6709\u95dc\u3002\u9019\u7bc7\u6587\u7ae0\u5c07\u6df1\u5165\u63a2\u8a0e\u8a72\u932f\u8aa4\u7684\u6210\u56e0\u3001\u5f71\u97ff\u4ee5\u53ca\u4fee\u5fa9\u65b9\u6cd5\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u6709\u6548\u5730\u89e3\u6c7a\u554f\u984c\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc22033%e7%9a%84%e6%88%90%e5%9b%a0-rVtHiBexVP\">\u932f\u8aa4\u4ee3\u78bc22033\u7684\u6210\u56e0<\/h2>\n<p>PostgreSQL\u7684\u932f\u8aa4\u4ee3\u78bc22033\u901a\u5e38\u51fa\u73fe\u5728\u4f7f\u7528JSON\u6216JSONB\u6578\u64da\u985e\u578b\u6642\uff0c\u7576\u4f60\u5617\u8a66\u8a2a\u554f\u4e00\u500b\u4e0d\u5b58\u5728\u7684\u9375\u6216\u4e0b\u6a19\u6642\uff0c\u5c31\u6703\u5f15\u767c\u6b64\u932f\u8aa4\u3002\u9019\u53ef\u80fd\u662f\u7531\u65bc\u4ee5\u4e0b\u5e7e\u500b\u539f\u56e0\u9020\u6210\u7684\uff1a<\/p>\n<ul>\n<li><strong>\u9375\u540d\u62fc\u5beb\u932f\u8aa4\uff1a<\/strong>\u5982\u679c\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528\u7684\u9375\u540d\u8207\u5be6\u969b\u5b58\u5132\u7684\u9375\u540d\u4e0d\u4e00\u81f4\uff0c\u5247\u6703\u5c0e\u81f4\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u6578\u64da\u7d50\u69cb\u4e0d\u5339\u914d\uff1a<\/strong>\u7576\u4f60\u5617\u8a66\u5f9e\u4e00\u500b\u4e0d\u6b63\u78ba\u7684\u6578\u64da\u7d50\u69cb\u4e2d\u63d0\u53d6\u6578\u64da\u6642\uff0c\u4f8b\u5982\u5f9e\u4e00\u500b\u6578\u7d44\u4e2d\u63d0\u53d6\u5c0d\u8c61\uff0c\u6703\u5f15\u767c\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u4f7f\u7528\u4e0d\u7576\u7684\u4e0b\u6a19\uff1a<\/strong>\u5728JSON\u6578\u7d44\u4e2d\u4f7f\u7528\u4e0d\u6b63\u78ba\u7684\u4e0b\u6a19\uff08\u4f8b\u5982\uff0c\u8ca0\u6578\u6216\u8d85\u51fa\u7bc4\u570d\u7684\u4e0b\u6a19\uff09\u4e5f\u6703\u5c0e\u81f4\u6b64\u932f\u8aa4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc22033-rVtHiBexVP\">\u5982\u4f55\u4fee\u5fa9\u932f\u8aa4\u4ee3\u78bc22033<\/h2>\n<p>\u4fee\u5fa9PostgreSQL\u932f\u8aa4\u4ee3\u78bc22033\u7684\u904e\u7a0b\u901a\u5e38\u6d89\u53ca\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5%e9%8d%b5%e5%90%8d%e5%92%8c%e4%b8%8b%e6%a8%99-rVtHiBexVP\">1. \u6aa2\u67e5\u9375\u540d\u548c\u4e0b\u6a19<\/h3>\n<p>\u9996\u5148\uff0c\u6aa2\u67e5\u4f60\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528\u7684\u9375\u540d\u548c\u4e0b\u6a19\u662f\u5426\u6b63\u78ba\u3002\u78ba\u4fdd\u5b83\u5011\u8207\u6578\u64da\u5eab\u4e2d\u5be6\u969b\u5b58\u5132\u7684\u7d50\u69cb\u4e00\u81f4\u3002\u4f8b\u5982\uff0c\u5047\u8a2d\u4f60\u6709\u4ee5\u4e0bJSON\u6578\u64da\uff1a<\/p>\n<pre><code>{\n    \"user\": {\n        \"name\": \"Alice\",\n        \"age\": 30,\n        \"hobbies\": [\"reading\", \"traveling\"]\n    }\n}<\/code><\/pre>\n<p>\u5982\u679c\u4f60\u5617\u8a66\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\u4f86\u7372\u53d6\u7528\u6236\u7684\u6027\u5225\uff1a<\/p>\n<pre><code>SELECT user-&gt;&gt;'gender' FROM users;<\/code><\/pre>\n<p>\u9019\u5c07\u5c0e\u81f4\u932f\u8aa422033\uff0c\u56e0\u70ba&#8221;gender&#8221;\u9019\u500b\u9375\u4e26\u4e0d\u5b58\u5728\u65bcJSON\u6578\u64da\u4e2d\u3002\u6b63\u78ba\u7684\u67e5\u8a62\u61c9\u8a72\u662f\uff1a<\/p>\n<pre><code>SELECT user-&gt;&gt;'name' FROM users;<\/code><\/pre>\n<h3 id=\"2-%e7%a2%ba%e4%bf%9d%e6%95%b8%e6%93%9a%e7%b5%90%e6%a7%8b%e6%ad%a3%e7%a2%ba-rVtHiBexVP\">2. \u78ba\u4fdd\u6578\u64da\u7d50\u69cb\u6b63\u78ba<\/h3>\n<p>\u5728\u8655\u7406JSON\u6578\u64da\u6642\uff0c\u78ba\u4fdd\u4f60\u5c0d\u6578\u64da\u7d50\u69cb\u6709\u6e05\u6670\u7684\u7406\u89e3\u3002\u5982\u679c\u4f60\u5617\u8a66\u5f9e\u4e00\u500b\u6578\u7d44\u4e2d\u63d0\u53d6\u5c0d\u8c61\uff0c\u8acb\u78ba\u8a8d\u6578\u64da\u7684\u7d50\u69cb\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u4ee5\u4e0bJSON\u6578\u7d44\uff1a<\/p>\n<pre><code>[\n    {\"id\": 1, \"name\": \"Alice\"},\n    {\"id\": 2, \"name\": \"Bob\"}\n]<\/code><\/pre>\n<p>\u5982\u679c\u4f60\u60f3\u7372\u53d6\u7b2c\u4e8c\u500b\u5c0d\u8c61\u7684\u540d\u7a31\uff0c\u6b63\u78ba\u7684\u67e5\u8a62\u61c9\u8a72\u662f\uff1a<\/p>\n<pre><code>SELECT (data-&gt;1)-&gt;&gt;'name' FROM json_data;<\/code><\/pre>\n<p>\u800c\u4e0d\u662f\u4f7f\u7528\u4e0d\u6b63\u78ba\u7684\u4e0b\u6a19\u3002<\/p>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8%e6%a2%9d%e4%bb%b6%e6%aa%a2%e6%9f%a5-rVtHiBexVP\">3. \u4f7f\u7528\u689d\u4ef6\u6aa2\u67e5<\/h3>\n<p>\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528\u689d\u4ef6\u6aa2\u67e5\u53ef\u4ee5\u907f\u514d\u56e0\u70ba\u9375\u540d\u6216\u4e0b\u6a19\u4e0d\u5b58\u5728\u800c\u5f15\u767c\u7684\u932f\u8aa4\u3002\u4f8b\u5982\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528COALESCE\u51fd\u6578\u4f86\u63d0\u4f9b\u4e00\u500b\u9ed8\u8a8d\u503c\uff1a<\/p>\n<pre><code>SELECT COALESCE(user-&gt;&gt;'gender', 'unknown') FROM users;<\/code><\/pre>\n<p>\u9019\u6a23\uff0c\u5373\u4f7f&#8221;gender&#8221;\u9375\u4e0d\u5b58\u5728\uff0c\u4e5f\u4e0d\u6703\u5f15\u767c\u932f\u8aa4\uff0c\u800c\u662f\u8fd4\u56de&#8217;unknown&#8217;\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-rVtHiBexVP\">\u7e3d\u7d50<\/h2>\n<p>PostgreSQL\u932f\u8aa4\u4ee3\u78bc22033 &#8211; invalid_sql_json_subscript\u901a\u5e38\u662f\u7531\u65bc\u7121\u6548\u7684JSON\u9375\u540d\u6216\u4e0b\u6a19\u5f15\u8d77\u7684\u3002\u901a\u904e\u4ed4\u7d30\u6aa2\u67e5\u9375\u540d\u3001\u78ba\u4fdd\u6578\u64da\u7d50\u69cb\u6b63\u78ba\u4ee5\u53ca\u4f7f\u7528\u689d\u4ef6\u6aa2\u67e5\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u4fee\u5fa9\u6b64\u932f\u8aa4\u3002\u5c0d\u65bc\u9700\u8981\u7a69\u5b9a\u548c\u9ad8\u6548\u6578\u64da\u5eab\u7ba1\u7406\u7684\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u96f2\u4f3a\u670d\u5668<\/a>\u89e3\u6c7a\u65b9\u6848\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u6574\u9ad4\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4fee\u5fa9PostgreSQL\u932f\u8aa4\u4ee3\u78bc22033\u7684\u6307\u5357\uff0c\u89e3\u6c7ainvalid_sql_json_subscript\u554f\u984c\uff0c\u78ba\u4fddJSON\u67e5\u8a62\u6b63\u78ba\u57f7\u884c\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-178770","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178770","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=178770"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178770\/revisions"}],"predecessor-version":[{"id":178771,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178770\/revisions\/178771"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=178770"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=178770"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=178770"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}