count distinct sql code example

Example 1: mongodb count distinct

db.collection.distinct('field').length

Example 2: select count of distinct values sql

SELECT COUNT (DISTINCT column-name)  FROM table-name

Example 3: sql count distinct group by

SELECT COUNT(DISTINCT program_name) AS Count,
  program_type AS [Type] 
FROM cm_production 
WHERE push_number=@push_number 
GROUP BY program_type

Example 4: query DISTINCT

SELECT DISTINCT Column_name FROM table_name;