how to select 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.inspecting a column unique/distinct values in SQL
#The SELECT DISTINCT statement is used to return only distinct (or unique) values.
SELECT
DISTINCT(column_name)
FROM
database_name.table_nameCopyright © 2021 Codeinu
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