Create SQL Exercises: Find the names of departments where more than two employees are working

Author: mrmightyq

w3resource/SQL Exercises: Find the names of departments where more than two employees are working

@@ -0,0 +1,39 @@
+https://www.w3resource.com/sql-exercises/sql-joins-exercise-29.php
+
+SQL JOINS: Exercise-29 with Solution
+From the following tables write a SQL query to find the names of departments where more than two employees are working. Return dpt_name.
+
+Sample table:emp_department
+DPT_CODE DPT_NAME        DPT_ALLOTMENT
+-------- --------------- -------------
+      57 IT                      65000
+      63 Finance                 15000
+      47 HR                     240000
+      27 RD                      55000
+      89 QC                      75000
+
+Sample table: emp_details
+ EMP_IDNO EMP_FNAME       EMP_LNAME         EMP_DEPT
+--------- --------------- --------------- ----------
+   127323 Michale         Robbin                  57
+   526689 Carlos          Snares                  63
+   843795 Enric           Dosio                   57
+   328717 Jhon            Snares                  63
+   444527 Joseph          Dosni                   47
+   659831 Zanifer         Emily                   47
+   847674 Kuleswar        Sitaraman               57
+   748681 Henrey          Gabriel                 47
+   555935 Alex            Manuel                  57
+   539569 George          Mardy                   27
+   733843 Mario           Saule                   63
+   631548 Alan            Snappy                  27
+   839139 Maria           Foster                  57
+
+
+select b.dpt_name
+from emp_details as a
+join emp_department as b on b.dpt_code=a.emp_dept
+group by b.dpt_name
+having count(*) > 2
+;
+