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Mongodb Cheat Sheet Pdf Download __link__ OnlineTo keep this reference handy on your desktop, you can save this page as a PDF. Simply press (Windows) or Cmd+P (Mac) and select "Save as PDF" in your browser settings. db.collection.createIndex({ email: 1 }) : Create an ascending index on "email". mongodb cheat sheet pdf download Create, Read, Update, and Delete are the core of any database interaction. Create (Insert) To keep this reference handy on your desktop, Aggregation is used for processing data records and returning computed results. $match : Filters documents (like find ). $group : Groups documents by a specific key. $project : Reshapes documents (adds/removes fields). Create, Read, Update, and Delete are the core db.collection.deleteMany({ status: "Inactive" }) : Delete all matching documents. db.collection.drop() : Delete the entire collection. Query Operators Use these to refine your searches beyond simple equality. $gt / $gte : Greater than / Greater than or equal to. $lt / $lte : Less than / Less than or equal to. $ne : Not equal to. $in : Matches any value in an array. $and / $or : Logical operators for multiple conditions. $exists : Filter by the presence of a field. $regex : Search using regular expressions. Indexing for Performance db.collection.createIndex({ title: "text" }) : Create a text index for searching words. |
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