Delete

Use delete_one to delete at most one matching document, or delete_many to delete every matching document. Both methods return a DeleteResult; its deleted_count field reports how many documents were removed.

use polodb_core::bson::{doc, Document};
use polodb_core::{CollectionT, Database};
 
fn main() -> polodb_core::Result<()> {
    let db = Database::open_path("./polodb-data")?;
    let collection = db.collection::<Document>("books");
 
    let result = collection.delete_many(doc! {
        "author": "George Orwell",
    })?;
 
    println!("deleted: {}", result.deleted_count);
    Ok(())
}

Condition

Name	Description
$eq	Matches values that are equal to a specified value.
$gt	Matches values that are greater than a specified value.
$gte	Matches values that are greater than or equal to a specified value.
$in	Matches any of the values specified in an array.
$lt	Matches values that are less than a specified value.
$lte	Matches values that are less than or equal to a specified value.
$ne	Matches all values that are not equal to a specified value.
$nin	Matches none of the values specified in an array.
$regex	Matches strings against the given regular expression.

These conditions are the same as those listed under Advanced conditions.

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