SQL query to find unique column values from table

We take a sample table named Geeks and return unique column values by applying various SQL queries on it.

Table – Geeks

G_ID	FIRSTNAME	LASTNAME	JOININGDATE	DEPARTMENT
1	Mohan	Arora	7-08-2019	DBA
2	Nisha	Verma	25-03-2017	Admin
3	Vishal	Gupta	9-01-2020	DBA
4	Amita	Singh	5-12-2017	Writer
5	Vishal	Bharti	3-05-2018	Admin
6	Vinod	Diwan	19-04-2018	Review
7	Sheetal	Kumar	5-01-2017	Review
8	Geeta	Chauan	5-02-2019	Admin
9	Mona	Mishra	15-01-2018	Writer

SQL query to find unique values of column department from Geeks table.

Select distinct DEPARTMENT 
from Geeks;

Output –

DEPARTMENT
Admin
DBA
Review
Writer

SQL query to find details of column department where name as “DBA”.

Select * 
from Geeks 
where DEPARTMENT like 'DBA%';

Output –

G_ID	FIRSTNAME	LASTNAME	JOININGDATE	DEPARTMENT
1	Mohan	Arora	7-08-2019	DBA
3	Vishal	Gupta	9-01-2020	DBA

SQL query to find the count of rows in the department ‘Admin’.

SELECT COUNT(*) 
FROM Geeks 
WHERE DEPARTMENT = 'Admin';

Output –

(No column name)
3

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