MongoDB CURD之DELETE

MongoDB删除文档的方式有
deleteMany
deleteOne
remove

1.删除所有文档
db.inventory.deleteMany({})
db.bios.remove({ })
等效于SQL:delete from inventory;
但建议使用db.inventory.drop()
2.删除符合条件的所有文档
db.inventory.deleteMany({ status : “A” })
db.inventory.remove({ status : “A” })
等效于SQL:delete from inventory where status=‘A’;
3.删除一条符合条件的文档
db.inventory.deleteOne( { status: “D” } )
db.inventory.remove( { status: “D” },true )
等效于SQL:delete from inventory where status=‘D’ limit 1;