MongoDB 中,只有在獲取內容後才會真正建立集合!
建立資料庫
建立集合
db.createCollection(<name>)
查看集合
插入
db.posts.insertOne({
title: "Post Title 1",
body: "Body of post.",
category: "News",
likes: 1,
tags: ["news", "events"],
date: Date()
})
Image Not Showing
Possible Reasons
- The image was uploaded to a note which you don't have access to
- The note which the image was originally uploaded to has been deleted
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查找
Image Not Showing
Possible Reasons
- The image was uploaded to a note which you don't have access to
- The note which the image was originally uploaded to has been deleted
Learn More →
更新第一筆
db.posts.updateOne( { title: "Post Title 1" }, { $set: { likes: 2 } } )
Image Not Showing
Possible Reasons
- The image was uploaded to a note which you don't have access to
- The note which the image was originally uploaded to has been deleted
Learn More →
刪除第一筆
db.posts.deleteOne({ title: "Post Title 5" })
Image Not Showing
Possible Reasons
- The image was uploaded to a note which you don't have access to
- The note which the image was originally uploaded to has been deleted
Learn More →