本文為英文版的機器翻譯版本，如內容有任何歧義或不一致之處，概以英文版為準。
$search
5.0 版的新功能。
Amazon DocumentDB 中的$search運算子用於提供文字搜尋功能。
參數
無
範例 (MongoDB Shell)
下列範例示範如何使用 $search運算子來執行文字搜尋查詢。
建立範例文件
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." }
]);
查詢範例
db.textcollection.find(
{ $text: { $search: "John" } }
);
輸出
[
{
_id: 1,
name: 'John Doe',
description: 'This is a sample document about John Doe.'
}
]
程式碼範例
若要檢視使用 $search命令的程式碼範例，請選擇您要使用的語言標籤：
- 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()
