{"id":5006,"date":"2025-01-30T15:55:01","date_gmt":"2025-01-30T06:55:01","guid":{"rendered":"https:\/\/www.wetch.co.jp\/note\/?p=5006"},"modified":"2025-01-30T15:55:02","modified_gmt":"2025-01-30T06:55:02","slug":"postgresql%e3%81%a7%e3%83%99%e3%82%af%e3%83%88%e3%83%ab%e6%a4%9c%e7%b4%a2","status":"publish","type":"post","link":"https:\/\/www.wetch.co.jp\/note\/postgresql%e3%81%a7%e3%83%99%e3%82%af%e3%83%88%e3%83%ab%e6%a4%9c%e7%b4%a2\/","title":{"rendered":"PostgreSQL\u3067\u30d9\u30af\u30c8\u30eb\u691c\u7d22"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u5148\u306bPostgreSQL\u95a2\u9023\u306e\u8a18\u4e8b\u3092\u6295\u7a3f\u3057\u307e\u3057\u305f\u304c\u3001\u9577\u5e74MySQL\uff08MariaDB\uff09\u3092\u611b\u7528\u3057\u3066\u304d\u305f\u79c1\u304c\u4eca\u66f4\u306a\u304c\u3089PostgreSQL\u306b\u30c1\u30e3\u30ec\u30f3\u30b8\u3057\u3066\u3044\u308b\u306e\u306f\u3001\u30d9\u30af\u30c8\u30eb\u691c\u7d22\u3092\u8a66\u3057\u3066\u307f\u305f\u3044\u3068\u601d\u3063\u305f\u305f\u3081\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">MySQL\u306b\u95a2\u3057\u3066\u3082\u6d3e\u751f\u7684\u306a\u30b5\u30fc\u30d3\u30b9\uff08\u6709\u511f\uff1f\uff09\u3067\u306f\u30d9\u30af\u30c8\u30eb\u691c\u7d22\u306b\u5bfe\u5fdc\u3057\u305f\u3082\u306e\u3082\u3042\u308b\u3088\u3046\u3067\u3059\u304c\u3001MySQL\u672c\u4f53\u3068\u3057\u3066\u306f\u672a\u30b5\u30dd\u30fc\u30c8\u306e\u3088\u3046\u3067\u3001\u76f4\u8fd1\u3067\u6c17\u8efd\u306b\uff08\u7121\u511f\u3067\uff09\u8a66\u3057\u3066\u307f\u3089\u308c\u308b\u72b6\u6cc1\u306b\u306f\u306a\u3055\u305d\u3046\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3068\u8a00\u3046\u3053\u3068\u3067\u3001\u4eca\u56de\u306f\u30ed\u30fc\u30ab\u30ebPC\u306e\u958b\u767a\u74b0\u5883\uff08Mac + VirtualBox + Vagrant + Ubuntu22.04 + PostgreSQL17\uff09\u3067\u30d9\u30af\u30c8\u30eb\u691c\u7d22\u3092\u4f7f\u3048\u308b\u3088\u3046\u306b\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30d9\u30af\u30c8\u30eb\u691c\u7d22\u3068\u306f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u300c\u30d9\u30af\u30c8\u30eb\u691c\u7d22\u300d\u3068\u306f\u3001\u30d9\u30af\u30c8\u30eb\u3092\u5bfe\u8c61\u3068\u3057\u305f\u691c\u7d22\u3067\u3059\u3002\u5f53\u305f\u308a\u524d\u3067\u3059\u306d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u300c\u30d9\u30af\u30c8\u30eb\u300d\u3068\u306f\u6570\u5b66\u7684\u306a\u5b9a\u7fa9\u3067\u8a00\u3048\u3070\u300c\u5927\u304d\u3055\u3068\u5411\u304d\u3092\u6301\u3063\u305f\u91cf\u300d\u3068\u8a00\u3063\u305f\u3068\u3053\u308d\u3067\u3059\u304c\u3001\u7c21\u5358\u306b\u8a00\u3063\u3066\u3057\u307e\u3048\u3070\u6570\u5024\u306e\u96c6\u5408\u3067\u3042\u308a\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u7684\u306b\u306f\u914d\u5217\u3067\u8868\u73fe\u3055\u308c\u308b\u3082\u306e\u3067\u3059\u3002<br>\u305f\u3060\u3001\u30d9\u30af\u30c8\u30eb\u691c\u7d22\u306e\u5bfe\u8c61\u3068\u306a\u308b\u30d9\u30af\u30c8\u30eb\uff08\u914d\u5217\uff09\u306f\u30c6\u30ad\u30b9\u30c8\u3001\u753b\u50cf\u3001\u97f3\u58f0\u306a\u3069\u306e\u30c7\u30fc\u30bf\u306e\u610f\u5473\u3084\u7279\u5fb4\u3092\u6570\u5024\u5316\u3057\u305f\u3082\u306e\u3067\u3059\u3002\u3053\u306e\u3001\u5bfe\u8c61\u3068\u306a\u308b\u30c7\u30fc\u30bf\u306e\u610f\u5473\u3084\u7279\u5fb4\u3092\u30d9\u30af\u30c8\u30eb\u306b\u5909\u63db\u3059\u308b\u64cd\u4f5c\u3092\u300c\u30a8\u30f3\u30d9\u30c7\u30a3\u30f3\u30b0\u300d\u3068\u8a00\u3044\u307e\u3059\u3002<br>\u3064\u307e\u308a\u3001\u4f55\u3089\u304b\u306e\u5bfe\u8c61\u30c7\u30fc\u30bf\u3092\u30a8\u30f3\u30d9\u30c7\u30a3\u30f3\u30b0\u306b\u3088\u308a\u6570\u5024\u306e\u96c6\u5408\u4f53\u306b\u5909\u63db\u3057\u305f\u7d50\u679c\u3001\u3068\u8a00\u3046\u306e\u304c\u30d9\u30af\u30c8\u30eb\u691c\u7d22\u306b\u7d61\u3081\u305f\u5834\u5408\u306e\u300c\u30d9\u30af\u30c8\u30eb\u300d\u306e\u610f\u5473\u3068\u8a00\u3063\u3066\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d9\u30af\u30c8\u30eb\u306b\u95a2\u3057\u3066\u300c\u8ddd\u96e2\u300d\u306e\u6982\u5ff5\u3092\u5c0e\u5165\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<br>\u4f8b\u3048\u30702\u6b21\u5143\u306e\u30d9\u30af\u30c8\u30ebA(1,1)\u306b\u5bfe\u3057\u3066\u3001\u4ed6\u306e3\u3064\u306e\u30d9\u30af\u30c8\u30ebB(2,2)\u3001C(1,-1)\u3001D(1,0)\u3068\u306e\u8ddd\u96e2\u3092\u8003\u3048\u3066\u307f\u307e\u3059\u3002<br>\u30d9\u30af\u30c8\u30eb\u306e\u7d42\u70b9\u9593\u306e\u8ddd\u96e2\uff08\u6b63\u78ba\u306b\u306f\u30e6\u30fc\u30af\u30ea\u30c3\u30c9\u8ddd\u96e2\uff09\u3092\u300c\u30d9\u30af\u30c8\u30eb\u9593\u306e\u8ddd\u96e2\u300d\u3068\u3059\u308b\u3068\u3001A\u3068\u4ed6\u306e\u30d9\u30af\u30c8\u30eb\u3068\u306e\u8ddd\u96e2\u306f\u3001B\u306f\u221a2\u3001C\u306f2\u3001D\u306f1\u306b\u306a\u308a\u307e\u3059\u3002<br>\u3053\u308c\u306f\u3001A\u306b\u5bfe\u3057\u3066\u306fD\u304c\u6700\u3082\u8fd1\u304f\u3001B,C\u306e\u9806\u3067\u9060\u304f\u306a\u3063\u3066\u3044\u308b\u3068\u5224\u65ad\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u3063\u305f\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002<br>\u3053\u306e\u5224\u65ad\u65b9\u6cd5\u3092\u691c\u7d22\u6761\u4ef6\u306b\u9069\u7528\u3059\u308c\u3070\u3001\u4e8b\u524d\u306b\u767b\u9332\u3055\u308c\u305f\u5927\u91cf\u306e\u30d9\u30af\u30c8\u30eb\u306e\u4e2d\u304b\u3089\u6240\u5b9a\u306e\u30d9\u30af\u30c8\u30eb\u306b\u8fd1\u3044\u9806\u3067\u4e00\u5b9a\u500b\u6570\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u62bd\u51fa\u3057\u3066\u304f\u308b\u3053\u3068\u3082\u53ef\u80fd\u306b\u306a\u308b\u8a33\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u300c\u30d9\u30af\u30c8\u30eb\u300d\u306f\u5bfe\u8c61\u30c7\u30fc\u30bf\u306e\u610f\u5473\u3084\u7279\u5fb4\u3092\u6570\u5024\u5316\u3057\u305f\u3082\u306e\u3067\u3042\u308a\u3001\u8ddd\u96e2\u306e\u8fd1\u3044\u30d9\u30af\u30c8\u30eb\u306f\u610f\u5473\u3084\u7279\u5fb4\u306e\u985e\u4f3c\u6027\u304c\u9ad8\u3044\u3068\u8a00\u3048\u307e\u3059\uff08\u3053\u306e\u8fba\u306f\u30a8\u30f3\u30d9\u30c7\u30a3\u30f3\u30b0\u306e\u65b9\u6cd5\u306b\u3082\u4f9d\u5b58\u3059\u308b\u3068\u601d\u3044\u307e\u3059\u304c\uff09\u3002<br>\u3064\u307e\u308a\u3001\u5bfe\u8c61\u30c7\u30fc\u30bf\u3092\u30d9\u30af\u30c8\u30eb\u5316\u3059\u308b\u3053\u3068\u3067\u3001\u610f\u5473\u3084\u7279\u5fb4\u306e\u8fd1\u3055\uff08\u985e\u4f3c\u5ea6\uff09\u3067\u306e\u691c\u7d22\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<br>\u3053\u308c\u306f\u5f93\u6765\u306e\u691c\u7d22\u304c\u6240\u5b9a\u306e\u5024\u3068\u306e\u5168\u4f53\u3082\u3057\u304f\u306f\u90e8\u5206\u7684\u306a\u300c\u4e00\u81f4\u300d\u3092\u57fa\u6e96\u306b\u884c\u306a\u3063\u3066\u3044\u305f\u3053\u3068\u3068\u306f\u5927\u304d\u304f\u7570\u306a\u308b\u7279\u5fb4\u3067\u3042\u308a\u3001\u305d\u308c\u3092\u53ef\u80fd\u3068\u3059\u308b\u306e\u304c\u300c\u30d9\u30af\u30c8\u30eb\u691c\u7d22\u300d\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u86c7\u8db3\u306a\u304c\u3089\u3001\u5b9f\u969b\u306e\u30d9\u30af\u30c8\u30eb\u691c\u7d22\u306b\u304a\u3051\u308b\u985e\u4f3c\u5ea6\u306e\u5224\u5b9a\u57fa\u6e96\u306f\u4e0a\u8a18\u3067\u8aac\u660e\u3057\u305f\u300c\u30e6\u30fc\u30af\u30ea\u30c3\u30c9\u8ddd\u96e2\u300d\u3060\u3051\u3067\u306f\u306a\u3044\u306e\u3067\u3059\u304c\u3001\u3053\u3053\u3067\u306f\u8a71\u304c\u8907\u96d1\u306b\u306a\u308b\u306e\u3067\u5272\u611b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30d1\u30c3\u30b1\u30fc\u30b8\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\uff08pgvector\uff09<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d9\u30af\u30c8\u30eb\u691c\u7d22\u306fPostgreSQL\u306e\u6a19\u6e96\u7684\u306a\u6a5f\u80fd\u3068\u3057\u3066\u5b9f\u73fe\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u306f\u306a\u304f\u3001pgvector\u306a\u308b\u62e1\u5f35\u6a5f\u80fd\u3092\u8ffd\u52a0\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u3053\u3068\u3067\u5229\u7528\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># apt install postgresql-17-pgvector<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d1\u30c3\u30b1\u30fc\u30b8\u304c\u6b63\u3057\u304f\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3067\u304d\u305f\u304b\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># apt list --installed | grep postgresql\n\nWARNING: apt does not have a stable CLI interface. Use with caution in scripts.\n\npostgresql-17-pgvector\/jammy-pgdg,now 0.8.0-1.pgdg22.04+1 amd64 &#91;installed]\npostgresql-17\/jammy-pgdg,now 17.2-1.pgdg22.04+1 amd64 &#91;installed]\npostgresql-client-17\/jammy-pgdg,now 17.2-1.pgdg22.04+1 amd64 &#91;installed,automatic]\npostgresql-client-common\/jammy-pgdg,now 267.pgdg22.04+1 all &#91;installed,automatic]\npostgresql-common\/jammy-pgdg,now 267.pgdg22.04+1 all &#91;installed,automatic]<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u554f\u984c\u306a\u3055\u305d\u3046\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30c6\u30fc\u30d6\u30eb\u4f5c\u6210<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">psql\u3067PostgreSQL\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3001\u30c6\u30fc\u30d6\u30eb\u3092\u4f5c\u6210\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># psql\n\npostgres=# CREATE DATABASE testdb;\nCREATE DATABASE\npostgres=# \\c testdb;\nYou are now connected to database \"testdb\" as user \"postgres\".\ntestdb=# \\dx\n                 List of installed extensions\n  Name   | Version |   Schema   |         Description          \n---------+---------+------------+------------------------------\n plpgsql | 1.0     | pg_catalog | PL\/pgSQL procedural language\n(1 row)\n\ntestdb=# CREATE EXTENSION vector;\nCREATE EXTENSION\ntestdb=# \\dx\n                             List of installed extensions\n  Name   | Version |   Schema   |                     Description                      \n---------+---------+------------+------------------------------------------------------\n plpgsql | 1.0     | pg_catalog | PL\/pgSQL procedural language\n vector  | 0.8.0   | public     | vector data type and ivfflat and hnsw access methods\n(2 rows)<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u307e\u305a\u306f\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u300ctestdb\u300d\u3092\u751f\u6210\u3057\u3001\u300cCREATE EXTENSION\u300d\u3067\u5148\u306b\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u305f\u62e1\u5f35\u6a5f\u80fd\u300cpgvector\u300d\u3092\u6709\u52b9\u306b\u3057\u3066\u3044\u307e\u3059\u3002<br>\u3053\u306e\u64cd\u4f5c\u306f\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3054\u3068\u306b\u884c\u3046\u5fc5\u8981\u304c\u3042\u308b\u3088\u3046\u3067\u3059\u3002<br>\u307e\u305f\u3001\u6307\u5b9a\u3059\u308b\u62e1\u5f35\u6a5f\u80fd\u306e\u540d\u79f0\u304c\u300cpgvector\u300d\u3067\u306f\u306a\u304f\u300cvector\u300d\u3067\u3042\u308b\u70b9\u3082\u8981\u6ce8\u610f\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u300c\\dx\u300d\u306f\u4f7f\u7528\u53ef\u80fd\u3068\u306a\u3063\u3066\u3044\u308b\u62e1\u5f35\u6a5f\u80fd\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306e\u30b3\u30de\u30f3\u30c9\u3067\u3059\u3002<br>\u300cCREATE EXTENSION\u300d\u5b9f\u884c\u5f8c\u306b\u300cvector\u300d\u6a5f\u80fd\u304c\u4f7f\u7528\u53ef\u80fd\u306b\u306a\u3063\u3066\u3044\u308b\u3053\u3068\u304c\u5206\u304b\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b21\u306b\u4e0a\u8a18\u3067\u751f\u6210\u3057\u305f\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u30c6\u30fc\u30d6\u30eb\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>testdb=# CREATE TABLE items (id bigserial PRIMARY KEY, embedding vector(3));\nCREATE TABLE\ntestdb=# \\dt\n         List of relations\n Schema | Name  | Type  |  Owner   \n--------+-------+-------+----------\n public | items | table | postgres\n(1 row)<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c6\u30fc\u30d6\u30eb\u306fid\u3068embedding\u306e2\u3064\u306e\u30ab\u30e9\u30e0\u304b\u3089\u69cb\u6210\u3055\u308c\u3001id\u306f\u30d7\u30e9\u30a4\u30de\u30ea\u30ad\u30fc\u3001embedding\u306f\u691c\u7d22\u5bfe\u8c61\u3068\u306a\u308b\u30d9\u30af\u30c8\u30eb\u3067\u3059\u3002<br>embedding\u306e\u578b\u304c\u300cvector\u300d\u3067\u3042\u308b\u70b9\u304c\u91cd\u8981\u3067\u3059\u3002\u6b21\u5143\u6570\u3092\u6307\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3088\u3046\u306a\u306e\u3067\u3001\u4eca\u56de\u306f\u7c21\u5358\u306b3\u6b21\u5143\u306b\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30c6\u30b9\u30c8\u30c7\u30fc\u30bf\u751f\u6210<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u4eca\u56de\u306f\u3042\u304f\u307e\u3067\u7c21\u5358\u306a\u52d5\u4f5c\u78ba\u8a8d\u3092\u884c\u3046\u3053\u3068\u304c\u76ee\u7684\u306a\u306e\u3067\u3001\u691c\u7d22\u5bfe\u8c61\u3068\u306a\u308b\u30d9\u30af\u30c8\u30eb\u30c7\u30fc\u30bf\u3092\u9069\u5f53\u306b\u751f\u6210\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<br>Gemini\u5148\u751f\u304b\u3089\u4ee5\u4e0b\u306e\u3088\u3046\u306aSQL\u3092\u6559\u3048\u3066\u3044\u305f\u3060\u304d\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>testdb=# INSERT INTO items (embedding)\nSELECT ARRAY&#91;random(), random(), random()]::vector\nFROM generate_series(1, 100);\nINSERT 0 100<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">random\u95a2\u6570\u306f0\u304b\u30891\u672a\u6e80\u306e\u500d\u7cbe\u5ea6\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\u578b\u306e\u30e9\u30f3\u30c0\u30e0\u306a\u5024\u3092\u8fd4\u3059\u3088\u3046\u3067\u3059\u3002<br>\u4e0a\u8a18SQL\u3092\u5b9f\u884c\u3059\u308b\u3053\u3068\u3067\u30010\u304b\u30891\u672a\u6e80\u306e\u30e9\u30f3\u30c0\u30e0\u306a\u5024\u3092\u8981\u7d20\u306b\u6301\u30643\u6b21\u5143\u306e\u30d9\u30af\u30c8\u30eb100\u500b\u3092\u751f\u6210\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6700\u521d\u306e5\u500b\u3092\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>testdb=# select * from items limit 5;\n id |             embedding              \n----+------------------------------------\n  1 | &#91;0.5710897,0.8096412,0.65953577]\n  2 | &#91;0.9841591,0.2524546,0.74214983]\n  3 | &#91;0.20843579,0.76459855,0.84265333]\n  4 | &#91;0.12362185,0.69251436,0.14435722]\n  5 | &#91;0.29529455,0.4365992,0.9215352]\n(5 rows)<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u78ba\u304b\u306b0\u304b\u30891\u672a\u6e80\u306e\u30e9\u30f3\u30c0\u30e0\u306a\u6570\u50243\u500b\u304b\u3089\u69cb\u6210\u3055\u308c\u308b\u30d9\u30af\u30c8\u30eb\u304c\u751f\u6210\u3055\u308c\u3066\u3044\u308b\u3088\u3046\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30d9\u30af\u30c8\u30eb\u691c\u7d22\u306e\u5b9f\u884c<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u3067\u306f\u3001\u3044\u3088\u3044\u3088\u30d9\u30af\u30c8\u30eb\u691c\u7d22\u3092\u884c\u306a\u3063\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5bfe\u8c61\u3068\u306a\u308b\u30d9\u30af\u30c8\u30eb\u3092\u8003\u3048\u308b\u306e\u304c\u9762\u5012\u306a\u306e\u3067\u3001\u751f\u6210\u3055\u308c\u305f\u30d9\u30af\u30c8\u30eb\u306e\u4e2d\u304b\u30894\u756a\u76ee\u306e\u30d9\u30af\u30c8\u30eb\u3092\u6307\u5b9a\u3057\u3066\u691c\u7d22\u3057\u3066\u307f\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>testdb=# SELECT\n    id,\n    embedding,\n    embedding &lt;-&gt; '&#91;0.12362185,0.69251436,0.14435722]' AS distance\nFROM items\nORDER BY distance\nLIMIT 10;\n id |              embedding              |      distance       \n----+-------------------------------------+---------------------\n  4 | &#91;0.12362185,0.69251436,0.14435722]  |                   0\n 55 | &#91;0.20468295,0.670855,0.19496687]    | 0.09798655915415093\n 40 | &#91;0.12729597,0.4585914,0.023927728]  |  0.2631286960170064\n 60 | &#91;0.407607,0.7406687,0.1059569]      |  0.2905873084494271\n  9 | &#91;0.43927667,0.70147645,0.18590301]  |  0.3185032712418081\n 95 | &#91;0.33291745,0.9551113,0.059494425]  |  0.3463574806093081\n 68 | &#91;0.088931456,0.40865183,0.36994162] | 0.36423850327926366\n 25 | &#91;0.3149057,0.45645246,0.3772269]    |  0.3828093859487499\n  7 | &#91;0.37682474,0.41681066,0.22852291]  |  0.3836770707207596\n 99 | &#91;0.46199197,0.48390046,0.117284425] | 0.39843071202498515\n(10 rows)<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0a\u8a18\u3067\u306f\u30ab\u30e9\u30e0\u300cembedding\u300d\u306b\u5bfe\u3057\u3066\u6f14\u7b97\u5b50\u300c&lt;-&gt;\u300d\u3092\u7528\u3044\u3066\u8a08\u7b97\u3057\u305f\u7d50\u679c\u3092\u300cdistance\u300d\u3068\u3044\u3046\u30c7\u30fc\u30bf\u3068\u3057\u3066\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\u3002<br>\u6f14\u7b97\u5b50\u300c&lt;-&gt;\u300d\u306f\u305d\u306e\u5f8c\u306b\u6307\u5b9a\u3055\u308c\u305f\u30d9\u30af\u30c8\u30eb\u3068\u306e\u30e6\u30fc\u30af\u30ea\u30c3\u30c9\u8ddd\u96e2\u3092\u8a08\u7b97\u3059\u308b\u3082\u306e\u3067\u3001\u3064\u307e\u308a\u306f\u300cdistance\u300d\u306f\u6307\u5b9a\u3055\u308c\u305f\u30d9\u30af\u30c8\u30eb\uff08[0.12362185,0.69251436,0.14435722]\uff09\u3068\u300cembedding\u300d\u306e\u5404\u5024\u306e\u30e6\u30fc\u30af\u30ea\u30c3\u30c9\u8ddd\u96e2\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<br>\u3055\u3089\u306b\u300cORDER BY\u300d\u3067\u300cdistance\u300d\u304c\u5c0f\u3055\u3044\uff08\u8fd1\u3044\uff09\u9806\u306b\u30bd\u30fc\u30c8\u3057\u3001\u300cLIMIT\u300d\u3067\u4e0a\u4f4d10\u4ef6\u306b\u7d5e\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7d50\u679c\u3082\u4e0a\u8a18\u901a\u308a\u3067\u3001\u540c\u3058\u30d9\u30af\u30c8\u30eb\uff08ID=4\uff09\u306b\u95a2\u3057\u3066\u306f\u300cdistance\u300d\u304c0\u306b\u306a\u308b\u306e\u306f\u5f53\u7136\u3068\u3057\u3066\u3001\u305d\u306e\u4ed6\u306e\u30d9\u30af\u30c8\u30eb\u306b\u95a2\u3057\u3066\u3082\u305d\u308c\u3063\u307d\u3044\u7d50\u679c\u304c\u51fa\u3066\u3044\u308b\u3088\u3046\u306b\u898b\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3067\u306f\u3001\u691c\u7d22\u5bfe\u8c61\u306e\u30d9\u30af\u30c8\u30eb\u306e\u6700\u521d\u306e\u5024\u306b0.1\u30d7\u30e9\u30b9\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<br>\u7d50\u679c\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>testdb=# SELECT\n    id,\n    embedding,\n    embedding &lt;-&gt; '&#91;0.22362185,0.69251436,0.14435722]' AS distance\nFROM items\nORDER BY distance \nLIMIT 10;\n id |              embedding              |      distance       \n----+-------------------------------------+---------------------\n 55 | &#91;0.20468295,0.670855,0.19496687]    | 0.05821637780403456\n  4 | &#91;0.12362185,0.69251436,0.14435722]  | 0.09999999422579987\n 60 | &#91;0.407607,0.7406687,0.1059569]      |  0.1940205089239784\n  9 | &#91;0.43927667,0.70147645,0.18590301]  | 0.21980303811009852\n 40 | &#91;0.12729597,0.4585914,0.023927728]  | 0.28018188310362857\n 95 | &#91;0.33291745,0.9551113,0.059494425]  |  0.2968238359834101\n 99 | &#91;0.46199197,0.48390046,0.117284425] | 0.31791981969663874\n  7 | &#91;0.37682474,0.41681066,0.22852291]  |   0.326446805655915\n 47 | &#91;0.48867017,0.8958795,0.09652027]   |  0.3374853625478919\n 25 | &#91;0.3149057,0.45645246,0.3772269]    |  0.3439276734594193<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5148\u307b\u30692\u756a\u76ee\u306e\u8fd1\u3055\u306b\u3042\u3063\u305fID=55\u306e\u30d9\u30af\u30c8\u30eb\u304c\u6700\u3082\u8fd1\u3044\u3068\u5224\u65ad\u3055\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002<br>ID=4\u3068ID=55\u306f\u6bd4\u8f03\u7684\u4f3c\u305f\u6570\u5024\u3067\u69cb\u6210\u3055\u308c\u3066\u304a\u308a\u3001\u4e00\u756a\u5dee\u304c\u5927\u304d\u304b\u3063\u305f\u6700\u521d\u306e\u5024\u304cID=55\u306b\u8fd1\u3044\u5024\u306b\u5909\u308f\u3063\u3066\u3044\u308b\u306e\u3067\u3001\u4e0a\u8a18\u7d50\u679c\u306f\u76f4\u611f\u7684\u306b\u3082\u7d0d\u5f97\u3067\u304d\u308b\u3082\u306e\u304b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3067\u306f\u3001\u5225\u306e\u6f14\u7b97\u3082\u8a66\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<br>\u4ee5\u4e0b\u3067\u306f\u6f14\u7b97\u5b50\u300c&lt;=&gt;\u300d\u3092\u4f7f\u3063\u3066\u3044\u307e\u3059\u3002<br>\u3053\u308c\u306f\u300c\u30b3\u30b5\u30a4\u30f3\u8ddd\u96e2\u300d\u306a\u308b\u3082\u306e\u3092\u8a08\u7b97\u3059\u308b\u3082\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>testdb=# SELECT\n    id,\n    embedding,\n    embedding &lt;=&gt; '&#91;0.12362185,0.69251436,0.14435722]' AS distance\nFROM items\nORDER BY distance\nLIMIT 10;\n id |             embedding              |       distance       \n----+------------------------------------+----------------------\n  4 | &#91;0.12362185,0.69251436,0.14435722] |                    0\n 55 | &#91;0.20468295,0.670855,0.19496687]   | 0.009090136836020668\n 40 | &#91;0.12729597,0.4585914,0.023927728] | 0.015884631074191136\n 95 | &#91;0.33291745,0.9551113,0.059494425] |  0.02259510390617181\n 60 | &#91;0.407607,0.7406687,0.1059569]     |  0.05434929340951733\n 47 | &#91;0.48867017,0.8958795,0.09652027]  |  0.05617696524781379\n  9 | &#91;0.43927667,0.70147645,0.18590301] |  0.06935690773057346\n 74 | &#91;0.54690385,0.89856815,0.34991896] |   0.0699755665977434\n 17 | &#91;0.62180436,0.9451308,0.3144874]   |  0.07880918764414113\n 45 | &#91;0.54410166,0.86179245,0.39861217] |  0.08178555737481874\n(10 rows)<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6700\u521d\u306e3\u4ef6\u307e\u3067\u306f\u30e6\u30fc\u30af\u30ea\u30c3\u30c9\u8ddd\u96e2\u306e\u5834\u5408\u3068\u540c\u3058\u3067\u3059\u304c\u3001\u305d\u308c\u4ee5\u964d\u306f\u9055\u3063\u3066\u3044\u307e\u3059\u3002<br>\u30e6\u30fc\u30af\u30ea\u30c3\u30c9\u8ddd\u96e2\u306f\u7d14\u7c8b\u306b2\u3064\u306e\u30d9\u30af\u30c8\u30eb\u306e\u7d42\u70b9\u9593\u306e\u8ddd\u96e2\u3092\u8868\u3059\u5024\u3067\u3059\u304c\u3001\u30b3\u30b5\u30a4\u30f3\u8ddd\u96e2\u306f\u30d9\u30af\u30c8\u30eb\u306e\u5927\u304d\u3055\u3092\u8003\u616e\u305b\u305a\uff08\u6b63\u898f\u5316\u306a\u308b\u64cd\u4f5c\u306b\u3088\u308a\u5411\u304d\u304c\u540c\u3058\u307e\u307e\u5927\u304d\u3055\u304c1\u306b\u306a\u308b\u3088\u3046\u306b\u5909\u63db\u3057\u305f\u4e0a\u3067\uff09\u30d9\u30af\u30c8\u30eb\u306e\u5411\u304d\u306e\u8fd1\u3055\u306e\u307f\u3092\u6570\u5024\u5316\u3057\u305f\u3082\u306e\u3089\u3057\u3044\u306e\u3067\u3001\u3053\u306e\u9055\u3044\u304c\u751f\u3058\u3066\u3044\u308b\u3088\u3046\u3067\u3059\u3002<br>\u3053\u306e\u3088\u3046\u306b\u3001\u540c\u3058\u30d9\u30af\u30c8\u30eb\u691c\u7d22\u3067\u3082\u300c\u8fd1\u3055\u300d\u306e\u5224\u65ad\u57fa\u6e96\u306b\u7528\u3044\u308b\u5024\u304c\u5909\u308f\u308b\u3068\u7d50\u679c\u3082\u5909\u308f\u308b\u305f\u3081\u9069\u5207\u306a\u9078\u629e\u304c\u91cd\u8981\u306b\u306a\u308a\u305d\u3046\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u307e\u3068\u3081<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u671f\u5f85\u901a\u308a\u30d9\u30af\u30c8\u30eb\u691c\u7d22\u304c\u8a66\u305b\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u304c\u3001\u539f\u7406\u7684\u306b\u306f2\u3064\u306e\u30d9\u30af\u30c8\u30eb\u306e\u300c\u8ddd\u96e2\u300d\u3092\u8a08\u7b97\u3057\u3001\u305d\u306e\u8fd1\u3044\u3082\u306e\u304b\u3089\u9806\u306b\u6240\u5b9a\u306e\u500b\u6570\u3092\u62bd\u51fa\u3057\u3066\u304f\u308b\u3060\u3051\u3067\u3042\u308b\u305f\u3081\u3001\u73fe\u6642\u70b9\u3067\u306f\u3042\u307e\u308a\u611f\u52d5\u306f\u3042\u308a\u307e\u305b\u3093\u306d\u3002<br>\u3084\u306f\u308a\u3001\u5b9f\u969b\u306b\u4f55\u3089\u304b\u306e\u30c7\u30fc\u30bf\u3092\u30d9\u30af\u30c8\u30eb\u5316\u3057\u3066\u307f\u3066\u3001\u305d\u306e\u691c\u7d22\u7d50\u679c\u3068\u3057\u3066\u78ba\u304b\u306b\u985e\u4f3c\u5ea6\u306e\u9ad8\u3044\u7269\u304c\u62bd\u51fa\u3067\u304d\u305f\u3068\u3044\u3046\u611f\u89e6\u3092\u5f97\u3066\u307f\u305f\u3044\u3082\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u305d\u306e\u305f\u3081\u306b\u306f\u30a8\u30f3\u30d9\u30c7\u30a3\u30f3\u30b0\u306e\u65b9\u6cd5\u304c\u91cd\u8981\u306b\u306a\u308b\u304b\u3068\u601d\u3044\u307e\u3059\u304c\u3001\u305d\u306e\u8fba\u306f\u6b21\u306e\u6a5f\u4f1a\u306b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5148\u306bPostgreSQL\u95a2\u9023\u306e\u8a18\u4e8b\u3092\u6295\u7a3f\u3057\u307e\u3057\u305f\u304c\u3001\u9577\u5e74MySQL\uff08MariaDB\uff09\u3092\u611b\u7528\u3057\u3066\u304d\u305f\u79c1\u304c\u4eca\u66f4\u306a\u304c\u3089PostgreSQL\u306b\u30c1\u30e3\u30ec\u30f3\u30b8\u3057\u3066\u3044\u308b\u306e\u306f\u3001\u30d9\u30af\u30c8\u30eb\u691c\u7d22\u3092\u8a66\u3057\u3066\u307f\u305f\u3044\u3068\u601d\u3063\u305f\u305f\u3081\u3067\u3059\u3002 MySQL\u306b\u95a2\u3057 [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":5010,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_wp_rev_ctl_limit":""},"categories":[210],"tags":[],"class_list":["post-5006","post","type-post","status-publish","format-standard","has-post-thumbnail","category-210"],"_links":{"self":[{"href":"https:\/\/www.wetch.co.jp\/note\/wp-json\/wp\/v2\/posts\/5006","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wetch.co.jp\/note\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wetch.co.jp\/note\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wetch.co.jp\/note\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wetch.co.jp\/note\/wp-json\/wp\/v2\/comments?post=5006"}],"version-history":[{"count":0,"href":"https:\/\/www.wetch.co.jp\/note\/wp-json\/wp\/v2\/posts\/5006\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wetch.co.jp\/note\/wp-json\/wp\/v2\/media\/5010"}],"wp:attachment":[{"href":"https:\/\/www.wetch.co.jp\/note\/wp-json\/wp\/v2\/media?parent=5006"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wetch.co.jp\/note\/wp-json\/wp\/v2\/categories?post=5006"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wetch.co.jp\/note\/wp-json\/wp\/v2\/tags?post=5006"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}