mongodb count distinct
db.collection.distinct('field').lengthMySQL DISTINCT
When querying data from a table, you may get duplicate rows. In order to remove these duplicate rows, you use the DISTINCT clause in the SELECT statement.
Here is the syntax of the DISTINCT clause:
SELECT DISTINCT
select_list
FROM
table_name;find distinct in mongodb
db.inventory.distinct( "item.sku", { dept: "A" } )Copyright © 2021 Codeinu
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