Question

how to get maximum value in mongoose query . in SQL it is easy

SELECT MAX(LAST_MOD) FROM table1
Where field1=1

i want Equivalent of above SQL code in mongoose(node.js)

Answer 1

MongoDB supports max/min, but they don’t recommend using it in real applications :

min and max exist primarily to support the mongos (sharding) process.

http://www.mongodb.org/display/DOCS/min+and+max+Query+Specifiers

You could pretty much have the same result with :

Model.findOne({ field1 : 1 }).sort(last_mod, 1).run( function(err, doc) {
     var max = doc.last_mod;
});