{"id":565,"date":"2021-03-25T00:34:55","date_gmt":"2021-03-24T15:34:55","guid":{"rendered":"http:\/\/localhost:8000\/?p=565"},"modified":"2021-03-27T13:36:27","modified_gmt":"2021-03-27T04:36:27","slug":"postgresql-json","status":"publish","type":"post","link":"http:\/\/localhost:8000\/2021\/03\/postgresql-json.html","title":{"rendered":"PostgreSQL\u306b\u304a\u3051\u308bjson\/jsonb\u578b\u306e\u53d6\u308a\u6271\u3044"},"content":{"rendered":"<p>PostgreSQL\u306b\u306f\u3001JSON\u30c7\u30fc\u30bf\u3092\u7ba1\u7406\u3059\u308b\u578b\u3068\u3057\u3066json\u578b\u3068jsonb\u578b\u304c\u3042\u308a\u307e\u3059\u3002<br \/>\n\u3053\u308c\u3089\u306f\u767b\u9332\u306f\u7c21\u5358\u306a\u306e\u3067\u3059\u304c\u3001\u691c\u7d22\u3057\u3066\u5229\u7528\u3059\u308b\u969b\u306f\u5c11\u3057\u7656\u304c\u3042\u308b\u306e\u3067\u3001\u89e3\u8aac\u3057\u3088\u3046\u3068\u304a\u601d\u3044\u307e\u3059\u3002<\/p>\n<p>PostgreSQL version: v12.6<\/p>\n<h2>json\u578b\u3068jsonb\u578b\u306e\u9055\u3044<\/h2>\n<p><a href=\"https:\/\/www.postgresql.jp\/document\/12\/html\/datatype-json.html\">\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/a> \u304b\u3089\u629c\u7c8b\u3057\u307e\u3057\u305f\u3002<br \/>\n\u30ad\u30fc\u9806\u5e8f\u3084\u91cd\u8907\u3092\u5229\u7528\u3059\u308b\u3088\u3046\u306a\u7279\u6b8a\u30b1\u30fc\u30b9\u3092\u9664\u304d\u3001jsonb\u578b\u3092\u5229\u7528\u3059\u308b\u65b9\u304c\u826f\u3055\u305d\u3046\u3067\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>json\u578b<\/th>\n<th>jsonb\u578b<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u5165\u529b\u30c6\u30ad\u30b9\u30c8\u306e\u6b63\u78ba\u306a\u30b3\u30d4\u30fc\u3092\u683c\u7d0d<br \/>\uff08\u7a7a\u767d\u3001\u30ad\u30fc\u9806\u5e8f\u3001\u91cd\u8907\u30ad\u30fc\u306a\u3069\u3082\u4fdd\u6301\uff09<\/td>\n<td>\u5165\u529b\u30c6\u30ad\u30b9\u30c8\u3092\u30d1\u30fc\u30b9\u3057\u305f\u7d50\u679c\u3092\u30d0\u30a4\u30ca\u30ea\u5f62\u5f0f\u3067\u683c\u7d0d<br \/>\uff08\u7a7a\u767d\u3001\u30ad\u30fc\u9806\u5e8f\u306f\u4fdd\u6301\u3057\u306a\u3044\u3002\u91cd\u8907\u30ad\u30fc\u91cd\u8907\u30ad\u30fc\u306f\u6700\u5f8c\u306e\u5024\u3060\u3051\u3092\u4fdd\u6301\uff09<\/td>\n<\/tr>\n<tr>\n<td>\u5229\u7528\u6642\u306b\u518d\u89e3\u6790\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u305f\u3081\u3001\u5229\u7528\u6642\u306b\u6642\u9593\u304c\u304b\u304b\u308b<\/td>\n<td>\u683c\u7d0d\u6642\u306b\u30aa\u30fc\u30d0\u30d8\u30c3\u30c9\u304c\u3042\u308b\u304c\u3001\u5229\u7528\u6642\u306f\u9ad8\u901f\u306b\u5229\u7528\u3067\u304d\u308b<\/td>\n<\/tr>\n<tr>\n<td>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u306a\u3044<\/td>\n<td>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u30c7\u30fc\u30bf\u767b\u9332<\/h2>\n<p><code>people<\/code>\u30c6\u30fc\u30d6\u30eb\u306b<code>detail<\/code>\u3068\u3044\u3046jsonb\u578b\u306e\u9805\u76ee\u3092\u767b\u9332\u3059\u308b\u30b5\u30f3\u30d7\u30eb\u306b\u306a\u308a\u307e\u3059\u3002<br \/>\n\u3053\u3061\u3089\u306e\u30c7\u30fc\u30bf\u3092\u5143\u306b\u5f8c\u7d9a\u306eSQL\u306e\u691c\u8a3c\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-sql\">create table people (\n  detail jsonb\n);\ninsert into people(detail)\nvalues (&#039;{&quot;name&quot;: &quot;\u592a\u90ce&quot;, &quot;age&quot;: 35, &quot;children&quot;: [{&quot;name&quot;: &quot;\u4e8c\u90ce&quot;, &quot;age&quot;: 9}, {&quot;name&quot;: &quot;\u4e09\u90ce&quot;, &quot;age&quot;: 6}]}&#039;)\n;<\/code><\/pre>\n<h2>JSON\u6f14\u7b97\u5b50\u3067JSON\u3092\u6271\u3046<\/h2>\n<p><a href=\"https:\/\/www.postgresql.jp\/document\/12\/html\/functions-json.html\">\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/a>\u3092\u5143\u306b\u89e3\u8aac\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<br \/>\n\u6f14\u7b97\u5b50\u306f\u3001<code>-&gt;<\/code>\u30fb<code>-&gt;&gt;<\/code>\u30fb<code>#&gt;<\/code>\u30fb<code>#&gt;&gt;<\/code>\u306e\u56db\u3064\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>\u8a18\u53f7\u306e\u610f\u5473<\/h3>\n<p>JSON\u6f14\u7b97\u5b50\u306f\u3001<code>-<\/code>\u30fb<code>#<\/code>\u30fb<code>&gt;<\/code>\u30fb<code>&gt;&gt;<\/code>\u306e\u8a18\u53f7\u306e\u7d44\u5408\u305b\u3067\u8868\u73fe\u3055\u308c\u307e\u3059\u3002<br \/>\n\u8a18\u53f7\u306b\u610f\u5473\u304c\u3042\u308b\u306e\u3067\u3001\u899a\u3048\u3066\u304a\u304f\u3068\u826f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li><code>-<\/code>: \u5b50\u8981\u7d20\u3092\u53d6\u5f97\u3059\u308b<\/li>\n<li><code>#<\/code>: \u30d1\u30b9\u3092\u6307\u5b9a\u3057\u3066\u8981\u7d20\u3092\u53d6\u5f97\u3059\u308b<\/li>\n<li><code>&gt;<\/code>: JSON\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u3057\u3066\u8981\u7d20\u3092\u53d6\u5f97\u3059\u308b<\/li>\n<li><code>&gt;&gt;<\/code>: \u30c6\u30ad\u30b9\u30c8\u3068\u3057\u3066\u8981\u7d20\u3092\u53d6\u5f97\u3059\u308b<\/li>\n<\/ul>\n<p>\u307e\u305f\u3001\u5b50\u8981\u7d20\u3092\u53d6\u5f97\u3059\u308b\u969b\u306f\u3001\u4ee5\u4e0b\u306e\u4e8c\u3064\u306e\u6307\u5b9a\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059<\/p>\n<ul>\n<li>JSON\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u5834\u5408\n<ul>\n<li>key\u3092\u6307\u5b9a\u3059\u308b<\/li>\n<li><code>&#039;{&quot;hoge&quot;: &quot;fuga&quot;}&#039;::json-&gt;&gt;&#039;hoge&#039;<\/code> \u3067 <code>fuga<\/code> \u3092\u53d6\u5f97\u3067\u304d\u308b<\/li>\n<\/ul>\n<\/li>\n<li>JSON\u914d\u5217\u306e\u5834\u5408\n<ul>\n<li>\u6dfb\u5b57\u3092\u6307\u5b9a\u3059\u308b<\/li>\n<li><code>&#039;[&quot;hoge&quot;, &quot;fuga&quot;]&#039;::json-&gt;&gt;0<\/code> \u3067 <code>hoge<\/code> \u3092\u53d6\u5f97\u3067\u304d\u308b<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>\u5177\u4f53\u4f8b<\/h3>\n<p><code>people.detail<\/code>\u306e\u5185\u5bb9\u306b\u5bfe\u3057\u3066\u691c\u7d22\u3092\u304b\u3051\u308b\u5f62\u3067\u8a18\u8f09\u3057\u3066\u3044\u304d\u307e\u3059\u304c\u3001\u4ee5\u4e0b\u306e\u4e8c\u3064\u306eSQL\u306f\u540c\u3058\u7d50\u679c\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-sql\">select detail-&gt;&#039;name&#039; from people;\nselect &#039;{&quot;name&quot;: &quot;\u592a\u90ce&quot;, &quot;age&quot;: 35, &quot;children&quot;: [{&quot;name&quot;: &quot;\u4e8c\u90ce&quot;, &quot;age&quot;: 9}, {&quot;name&quot;: &quot;\u4e09\u90ce&quot;, &quot;age&quot;: 6}]}&#039;::jsonb-&gt;&#039;name&#039;;<\/code><\/pre>\n<h4>\u5b50\u8981\u7d20\u3092\u53d6\u5f97\uff08<code>-&gt;&gt;<\/code>,<code>-&gt;<\/code>\uff09<\/h4>\n<ul>\n<li>\n<p><code>-&gt;&gt;<\/code>: \u5b50\u8981\u7d20\u3092\u30c6\u30ad\u30b9\u30c8\u3068\u3057\u3066\u53d6\u5f97\u3059\u308b<\/p>\n<pre><code class=\"language-sql\">select detail-&gt;&gt;&#039;name&#039; from people; --&gt; &quot;\u592a\u90ce&quot;(text\u578b)\nselect detail-&gt;&gt;&#039;age&#039; from people; --&gt; &quot;35&quot;(text\u578b)\nselect detail-&gt;&gt;&#039;children&#039; from people; --&gt; &quot;[{&quot;age&quot;: 9, &quot;name&quot;: &quot;\u4e8c\u90ce&quot;}, {&quot;age&quot;: 6, &quot;name&quot;: &quot;\u4e09\u90ce&quot;}]&quot;(text\u578b)<\/code><\/pre>\n<\/li>\n<li>\n<p><code>-&gt;<\/code>: \u5b50\u8981\u7d20\u3092json\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u3057\u3066\u53d6\u5f97\u3059\u308b<\/p>\n<pre><code class=\"language-sql\">select detail-&gt;&#039;name&#039; from people; --&gt; \u592a\u90ce(jsonb\u578b)\nselect detail-&gt;&#039;age&#039; from people; --&gt; 35(jsonb\u578b)\nselect detail-&gt;&#039;children&#039; from people; --&gt; [{&quot;age&quot;: 9, &quot;name&quot;: &quot;\u4e8c\u90ce&quot;}, {&quot;age&quot;: 6, &quot;name&quot;: &quot;\u4e09\u90ce&quot;}](jsonb\u578b)<\/code><\/pre>\n<\/li>\n<li>\n<p><code>-&gt;<\/code>\u306fjson\/jsonb\u578b\u3092\u8fd4\u3059\u306e\u3067\u3001\u6f14\u7b97\u5b50\u3092\u91cd\u306d\u3066\u5b6b\u30fb\u66fd\u5b6b\u30fb\u30fb\u30fb\u8981\u7d20\u3092\u53d6\u5f97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b<\/p>\n<pre><code class=\"language-sql\">select detail-&gt;&#039;children&#039;-&gt;0 from people; --&gt; {&quot;age&quot;: 9, &quot;name&quot;: &quot;\u4e8c\u90ce&quot;}(jsonb\u578b)\nselect detail-&gt;&#039;children&#039;-&gt;0-&gt;&#039;name&#039; from people; --&gt; \u4e8c\u90ce(jsonb\u578b)\nselect detail-&gt;&#039;children&#039;-&gt;&gt;0 from people; --&gt; &quot;{&quot;age&quot;: 9, &quot;name&quot;: &quot;\u4e8c\u90ce&quot;}&quot;(text\u578b)<\/code><\/pre>\n<\/li>\n<\/ul>\n<h4>\u30d1\u30b9\u6307\u5b9a\u3067\u5b50\u3084\u5b6b\u8981\u7d20\u3092\u76f4\u63a5\u53d6\u5f97\u3059\u308b\uff08<code>#&gt;&gt;<\/code>,<code>#&gt;<\/code>\uff09<\/h4>\n<p><code>-&gt;<\/code>\u3092\u4f7f\u3063\u3066\u3001\u9806\u756a\u306b\u8981\u7d20\u3092\u8fbf\u3063\u3066\u3044\u304f\u3053\u3068\u306f\u3067\u304d\u307e\u3059\u304c\u3001\u30d1\u30b9\u3092\u6307\u5b9a\u3057\u3066\u4e00\u6c17\u306b\u53d6\u5f97\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n<ul>\n<li>\n<p><code>#&gt;&gt;<\/code>: \u30d1\u30b9\u6307\u5b9a\u3057\u305f\u8981\u7d20\u3092\u30c6\u30ad\u30b9\u30c8\u3068\u3057\u3066\u53d6\u5f97\u3059\u308b<\/p>\n<pre><code class=\"language-sql\">select detail#&gt;&gt;&#039;{children,0}&#039; from people; --&gt; {&quot;age&quot;: 9, &quot;name&quot;: &quot;\u4e8c\u90ce&quot;}(text\u578b)\nselect detail#&gt;&gt;&#039;{children,0,name}&#039; from people; --&gt; \u4e8c\u90ce(text\u578b)<\/code><\/pre>\n<\/li>\n<li>\n<p><code>#&gt;<\/code>: \u30d1\u30b9\u6307\u5b9a\u3057\u305f\u8981\u7d20\u3092JSON\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u3057\u3066\u53d6\u5f97\u3059\u308b<\/p>\n<pre><code class=\"language-sql\">select detail#&gt;&#039;{children,0}&#039; from people; --&gt; {&quot;age&quot;: 9, &quot;name&quot;: &quot;\u4e8c\u90ce&quot;}(jsonb\u578b)\nselect detail#&gt;&#039;{children,0,name}&#039; from people; --&gt; \u4e8c\u90ce(jsonb\u578b)<\/code><\/pre>\n<\/li>\n<\/ul>\n<h2>JSON\u95a2\u6570<\/h2>\n<p>JSON\u4f5c\u6210\u95a2\u6570\u3068JSON\u51e6\u7406\u95a2\u6570\u304c\u3042\u308a\u307e\u3059\u3002<br \/>\nJSON\u4f5c\u6210\u95a2\u6570\u306f\u898b\u308c\u3070\u308f\u304b\u308b\u5185\u5bb9\u306a\u306e\u3067\u3001\u7279\u306b\u3053\u3053\u3067\u306f\u89e3\u8aac\u3057\u307e\u305b\u3093\u3002<br \/>\njson\u578b\u3092\u6271\u3046\u5834\u5408\u306f<code>json_xxx<\/code>\u3001jsonb\u578b\u3092\u6271\u3046\u5834\u5408\u306f<code>jsonb_xxx<\/code>\u3068\u3044\u3046\u95a2\u6570\u540d\u306b\u306a\u308a\u307e\u3059\u304c\u3001\u4f7f\u3044\u65b9\u306f\u3069\u3061\u3089\u3082\u540c\u3058\u3067\u3059\u3002<br \/>\n\u3053\u3053\u3067\u306fjson\u578b\u3092\u6271\u3046\u95a2\u6570\u3092\u3044\u304f\u3064\u304b\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<h3>json_array_length\uff1a JSON\u914d\u5217\u306e\u9577\u3055\u3092\u8fd4\u3059<\/h3>\n<pre><code class=\"language-sql\">select json_array_length(&#039;[&quot;aaa&quot;, &quot;bbb&quot;, &quot;ccc&quot;]&#039;::json);\n--\n3<\/code><\/pre>\n<h3>json_each: JSON\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092key\/value\u7d44\u5408\u305b\u306e\u96c6\u5408\u3092\u8fd4\u3059<\/h3>\n<p>JSON\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092key\/value\u7d44\u5408\u305b\u3067\u5225\u30ec\u30b3\u30fc\u30c9\u306b\u5206\u3051\u3066\u3001record\u578b\u3067\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-sql\">select json_each(&#039;{&quot;age&quot;: 9, &quot;name&quot;: &quot;\u4e8c\u90ce&quot;, &quot;metas&quot;: [&quot;hoge&quot;, &quot;fuga&quot;]}&#039;::json);\n--\n(age,9)\n(name,&quot;\u4e8c\u90ce&quot;)\n(metas,[&quot;hoge&quot;, &quot;fuga&quot;])<\/code><\/pre>\n<p>record\u578b\u306e\u307e\u307e\u3060\u3068\u6271\u3044\u306b\u304f\u3044\u306e\u3067\u3001\u81ea\u5206\u306fjson\u578b\u306b\u5909\u63db\u3057\u3066\u3001\u6271\u3046\u3088\u3046\u306b\u3057\u3066\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-sql\">with records as (\n  select json_each(&#039;{&quot;age&quot;: 9, &quot;name&quot;: &quot;\u4e8c\u90ce&quot;, &quot;metas&quot;: [&quot;hoge&quot;, &quot;fuga&quot;]}&#039;::json) as record\n)\nselect\n  row_to_json(record)-&gt;&#039;key&#039; as key\n  , row_to_json(record)-&gt;&#039;value&#039; as value\nfrom\n  records\n;\n--\n&quot;age&quot;,9\n&quot;name&quot;,&quot;\u4e8c\u90ce&quot;\n&quot;metas&quot;,[&quot;hoge&quot;, &quot;fuga&quot;]<\/code><\/pre>\n<h3>json_object_keys: JSON\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30ad\u30fc\u306e\u96c6\u5408\u3092\u8fd4\u3059<\/h3>\n<pre><code class=\"language-sql\">select json_object_keys(&#039;{&quot;age&quot;: 9, &quot;name&quot;: &quot;\u4e8c\u90ce&quot;, &quot;metas&quot;: [&quot;hoge&quot;, &quot;fuga&quot;]}&#039;::json);\n--\nage\nname\nmetas<\/code><\/pre>\n<h3>JSON\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u5024\u306e\u96c6\u5408\u3092\u8fd4\u3059<\/h3>\n<p><code>json_object_values<\/code>\u95a2\u6570\u306f\u5b58\u5728\u3057\u307e\u305b\u3093\u306e\u3067\u3001\u540c\u7b49\u306e\u3053\u3068\u304c\u3084\u308a\u305f\u3044\u5834\u5408\u306f\u3001<br \/>\n<code>json_each<\/code>\u3067record\u578b\u306e\u96c6\u5408\u306b\u5909\u63db\u3057\u3066\u3001<code>row_to_json<\/code>\u3067json\u578b\u306b\u623b\u3057\u3066\u3001<code>-&gt;&#039;value&#039;<\/code>\u3067\u5024\u3060\u3051\u53d6\u5f97\u3059\u308b\u3088\u3046\u306aSQL\u3092\u7d44\u3080\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-sql\">select row_to_json(json_each(&#039;{&quot;age&quot;: 9, &quot;name&quot;: &quot;\u4e8c\u90ce&quot;, &quot;metas&quot;: [&quot;hoge&quot;, &quot;fuga&quot;]}&#039;::json))-&gt;&#039;value&#039;;\n--\n9\n&quot;\u4e8c\u90ce&quot;\n[&quot;hoge&quot;, &quot;fuga&quot;]<\/code><\/pre>\n<h3>json_array_elements: JSON\u914d\u5217\u3092\u30ec\u30b3\u30fc\u30c9\u5206\u5272\u3057\u3066\u8fd4\u3059<\/h3>\n<pre><code class=\"language-sql\">select json_array_elements(&#039;[&quot;aaa&quot;, &quot;bbb&quot;, &quot;ccc&quot;]&#039;::json);\n--\n&quot;aaa&quot;\n&quot;bbb&quot;\n&quot;ccc&quot;<\/code><\/pre>\n<h3>JSON\u914d\u5217\u3092array\u578b\u306b\u5909\u95a2\u3059\u308b<\/h3>\n<p>JSON\u914d\u5217\u3092array\u578b\u306b\u76f4\u63a5\u5909\u63db\u3059\u308b\u95a2\u6570\u306f\u5b58\u5728\u3057\u307e\u305b\u3093\uff08\u305f\u3076\u3093\uff09\u3002<br \/>\n\u305d\u306e\u305f\u3081\u3001\u4e00\u65e6<code>json_array_elements<\/code>\u3084<code>json_array_elements_text <\/code>\u3067\u30ec\u30b3\u30fc\u30c9\u306b\u5206\u3051\u3066\u3001<br \/>\n\u305d\u308c\u3092<code>array_agg<\/code>\u3067\u6539\u3081\u3066array\u578b\u306b\u96c6\u7d04\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-sql\">with data as (\n  select json_array_elements_text(&#039;[&quot;aaa&quot;, &quot;bbb&quot;, &quot;ccc&quot;]&#039;::json) as record\n)\nselect\n  array_agg(record)\nfrom\n  data\n;\n--\n{aaa,bbb,ccc}<\/code><\/pre>\n<p>array\u578b\u306b\u306a\u3063\u3066\u3044\u308c\u3070\u3001<a href=\"https:\/\/www.postgresql.jp\/document\/12\/html\/functions-array.html\">array\u95a2\u6570<\/a>\u3092\u81ea\u7531\u306b\u4f7f\u3048\u308b\u306e\u3067\u3001\u8272\u3005\u52a0\u5de5\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-sql\">with data as (\n  select json_array_elements_text(&#039;[&quot;aaa&quot;, &quot;bbb&quot;, &quot;ccc&quot;]&#039;::json) as record\n)\nselect\n  concat(&#039;\u3010&#039;, array_to_string(array_agg(record), &#039;\u3011\u3010&#039;), &#039;\u3011&#039;)\nfrom\n  data\n;\n--\n\u3010aaa\u3011\u3010bbb\u3011\u3010ccc\u3011<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>PostgreSQL\u306b\u306f\u3001JSON\u30c7\u30fc\u30bf\u3092\u7ba1\u7406\u3059\u308b\u578b\u3068\u3057\u3066json\u578b\u3068jsonb\u578b\u304c\u3042\u308a\u307e\u3059\u3002 \u3053\u308c\u3089\u306f\u767b\u9332\u306f\u7c21\u5358\u306a\u306e\u3067\u3059\u304c\u3001\u691c\u7d22\u3057\u3066\u5229\u7528\u3059\u308b\u969b\u306f\u5c11\u3057\u7656\u304c\u3042\u308b\u306e\u3067\u3001\u89e3\u8aac\u3057\u3088\u3046\u3068\u304a\u601d\u3044\u307e\u3059\u3002 PostgreSQL version: v12.6 json\u578b\u3068jsonb\u578b\u306e\u9055\u3044 \u30c9\u30ad\u30e5\u30e1\u30f3\u30c8 \u304b\u3089\u629c\u7c8b\u3057\u307e\u3057\u305f\u3002 \u30ad\u30fc\u9806\u5e8f\u3084\u91cd\u8907\u3092\u5229\u7528\u3059\u308b\u3088\u3046\u306a\u7279\u6b8a\u30b1\u30fc\u30b9\u3092\u9664\u304d\u3001jsonb\u578b\u3092\u5229\u7528\u3059\u308b\u65b9\u304c\u826f\u3055\u305d\u3046\u3067\u3059\u3002 json\u578b jsonb\u578b \u5165\u529b\u30c6\u30ad\u30b9\u30c8\u306e\u6b63\u78ba\u306a\u30b3\u30d4\u30fc\u3092\u683c\u7d0d\uff08\u7a7a\u767d\u3001\u30ad\u30fc\u9806\u5e8f\u3001\u91cd\u8907\u30ad\u30fc\u306a\u3069\u3082\u4fdd\u6301\uff09 \u5165\u529b\u30c6\u30ad\u30b9\u30c8\u3092\u30d1\u30fc\u30b9\u3057\u305f\u7d50\u679c\u3092\u30d0\u30a4\u30ca\u30ea\u5f62\u5f0f\u3067\u683c\u7d0d\uff08\u7a7a\u767d\u3001\u30ad\u30fc\u9806\u5e8f\u306f\u4fdd\u6301\u3057\u306a\u3044\u3002\u91cd\u8907\u30ad\u30fc\u91cd\u8907\u30ad\u30fc\u306f\u6700\u5f8c\u306e\u5024\u3060\u3051\u3092\u4fdd\u6301\uff09 \u5229\u7528\u6642\u306b\u518d\u89e3\u6790\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u305f\u3081\u3001\u5229\u7528\u6642\u306b\u6642\u9593\u304c\u304b\u304b\u308b \u683c\u7d0d\u6642\u306b\u30aa\u30fc\u30d0\u30d8\u30c3\u30c9\u304c\u3042\u308b\u304c\u3001\u5229\u7528\u6642\u306f\u9ad8\u901f\u306b\u5229\u7528\u3067\u304d\u308b \u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u306a\u3044 \u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b \u30c7\u30fc\u30bf\u767b <a href=\"http:\/\/localhost:8000\/2021\/03\/postgresql-json.html\" class=\"read-more button-fancy -red\"><span class=\"btn-arrow\"><\/span><span class=\"twp-read-more text\">Continue Reading<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[34],"tags":[],"_links":{"self":[{"href":"http:\/\/localhost:8000\/wp-json\/wp\/v2\/posts\/565"}],"collection":[{"href":"http:\/\/localhost:8000\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/localhost:8000\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/localhost:8000\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/localhost:8000\/wp-json\/wp\/v2\/comments?post=565"}],"version-history":[{"count":1,"href":"http:\/\/localhost:8000\/wp-json\/wp\/v2\/posts\/565\/revisions"}],"predecessor-version":[{"id":566,"href":"http:\/\/localhost:8000\/wp-json\/wp\/v2\/posts\/565\/revisions\/566"}],"wp:attachment":[{"href":"http:\/\/localhost:8000\/wp-json\/wp\/v2\/media?parent=565"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/localhost:8000\/wp-json\/wp\/v2\/categories?post=565"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/localhost:8000\/wp-json\/wp\/v2\/tags?post=565"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}