I am developing a small project and I have a very simple question, if I have in DB a few records, for example these:
{
{ 'name':'nombre1',
'edad':'22'
},
{ 'name':'nombre2',
'edad':'23'
},
{ 'name':'nombre3',
'edad':'24'
},
}
How can I do to select the last record, which in this case would be the one with the name 'name 3'?
Thank you very much.
You can sort the records by insertion order using Natural Order and specifying that they come from the most recent to the oldest
db.micoleccion.find().sort({$natural:-1});
If you want the last record, it would be
db.micoleccion.find().sort({$natural:-1}).limit(1);
Eye : If you use the MMAP1 storage engine, the natural order considers update an existing record makes it the most recent .