Answers for "how to count unique values in sql server"

SQL
14

select count of distinct values sql

SELECT COUNT (DISTINCT column-name)  FROM table-name
Posted by: Guest on March-06-2020
0

how to find unique element in sql

DISTINCT
- select distinct * from employees; ==> 
           retrieves any row if it has at 
           least a single unique column.
- select distinct first_name from employees; ==> 
              retrieves unique names
              from table. (removes duplicates)
- select distinct count(*) from employees;
          retrieve number of unique rows
          if any row has at least a single unique data.
Posted by: Guest on January-28-2021

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