From dae682128613032ab70d3254e43720429c9d0f6b Mon Sep 17 00:00:00 2001
From: 8ga <jkwlstv@outlook.com>
Date: Mon, 2 Mar 2026 14:01:52 +0800
Subject: [PATCH] =?UTF-8?q?=E6=9B=B4=E6=96=B0=20=E9=83=A8=E7=BD=B2PostGIS.?=
 =?UTF-8?q?md?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 部署PostGIS.md | 37 +++++++++++++++++++++++--------------
 1 file changed, 23 insertions(+), 14 deletions(-)

diff --git a/部署PostGIS.md b/部署PostGIS.md
index 88e1875..b83c25a 100644
--- a/部署PostGIS.md
+++ b/部署PostGIS.md
@@ -138,28 +138,37 @@ SELECT to_tsvector('chinese_mix', 'Hello world, 你好世界，PostgreSQL 很棒
 ## 测试
 
 ```sql
--- 创建测试表
 CREATE TABLE articles (
     id SERIAL PRIMARY KEY,
     title TEXT,
-    content TEXT
+    content TEXT,
+    -- 生成列：自动维护 tsvector，避免每次查询都计算，提高性能
+    content_tsvector TSVECTOR GENERATED ALWAYS AS (to_tsvector('chinese_mix', content)) STORED
 );
 
--- 插入测试数据 (中英混合)
+-- 插入一些混合数据
 INSERT INTO articles (title, content) VALUES 
-('Introduction to AI', 'Artificial Intelligence is changing the world.'),
-('人工智能简介', '人工智能正在改变世界，PostgreSQL 是很好的存储工具。'),
-('PG 16 New Features', 'PostgreSQL 16 brings better performance and json features.');
+('AI 技术展望', '人工智能 (AI) 正在改变世界，PostgreSQL 是存储这些数据的首选数据库。'),
+('PostgreSQL 16 新特性', 'PostgreSQL 16 带来了更好的性能，支持 JSON 增强和中文分词优化。'),
+('日常开发笔记', 'Today I learned about zhparser. 它让中文搜索变得很简单。');
 
--- 创建 GIN 索引 (加速检索的关键)
-CREATE INDEX idx_articles_content ON articles USING GIN (to_tsvector('chinese_mix', content));
+-- 搜索包含 "人工智能" 的文章
+SELECT title, content 
+FROM articles 
+WHERE content_tsvector @@ to_tsquery('chinese_mix', '人工智能');
 
--- 搜索 "人工智能"
-SELECT title FROM articles WHERE to_tsvector('chinese_mix', content) @@ to_tsquery('chinese_mix', '人工智能');
+-- 搜索包含 "PostgreSQL" 的文章
+SELECT title, content 
+FROM articles 
+WHERE content_tsvector @@ to_tsquery('chinese_mix', 'PostgreSQL');
 
--- 搜索 "PostgreSQL" (英文)
-SELECT title FROM articles WHERE to_tsvector('chinese_mix', content) @@ to_tsquery('chinese_mix', 'PostgreSQL');
+-- 搜索既包含 "数据库" 又包含 "PostgreSQL" 的文章
+SELECT title, content 
+FROM articles 
+WHERE content_tsvector @@ to_tsquery('chinese_mix', '数据库 & PostgreSQL');
 
--- 搜索混合条件
-SELECT title FROM articles WHERE to_tsvector('chinese_mix', content) @@ to_tsquery('chinese_mix', '数据库 & 改变');
+-- 搜索包含 "AI" 或者 "改变" 的文章
+SELECT title, content 
+FROM articles 
+WHERE content_tsvector @@ to_tsquery('chinese_mix', 'AI | 改变');
 ```
\ No newline at end of file