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$search
5.0 版的新增内容。
Amazon DocumentDB 中的$search运算符用于提供文本搜索功能。
参数
无
示例（MongoDB 外壳）
以下示例演示如何使用$search运算符执行文本搜索查询。
创建示例文档
db.textcollection.createIndex({"description": "text"});
db.textcollection.insertMany([
{ _id: 1, name: "John Doe", description: "This is a sample document about John Doe." },
{ _id: 2, name: "Jane Smith", description: "This is a sample document about Jane Smith." },
{ _id: 3, name: "Bob Johnson", description: "This is a sample document about Bob Johnson." },
{ _id: 4, name: "Jon Jeffries", description: "This is a sample document about Jon Jeffries." }
]);
查询示例
db.textcollection.find(
{ $text: { $search: "John" } }
);
输出
[
{
_id: 1,
name: 'John Doe',
description: 'This is a sample document about John Doe.'
}
]
代码示例
要查看使用该$search命令的代码示例，请选择要使用的语言的选项卡：
- Node.js
-
const { MongoClient } = require('mongodb');
async function findWithText() {
const client = await MongoClient.connect('mongodb://<username>:<password>@<cluster-endpoint>:27017/?tls=true&tlsCAFile=global-bundle.pem&replicaSet=rs0&readPreference=secondaryPreferred&retryWrites=false');
const db = client.db('test');
const collection = db.collection('textcollection');
const result = await collection.find(
{ $text: { $search: "John" } }
).sort({ score: { $meta: "textScore" } }).toArray();
console.log(result);
client.close();
}
findWithText();
- Python
-
from pymongo import MongoClient
def find_with_text():
client = MongoClient('mongodb://<username>:<password>@<cluster-endpoint>:27017/?tls=true&tlsCAFile=global-bundle.pem&replicaSet=rs0&readPreference=secondaryPreferred&retryWrites=false')
db = client['test']
collection = db['textcollection']
result = list(collection.find(
{ '$text': { '$search': 'John' } }
))
print(result)
client.close()
find_with_text()
