Problem in query not getting desired output .

Question

i have the following table
mysql> select * from emp;
+------+-------+--------+-------+
| eid  | ename | salary | depid |
+------+-------+--------+-------+
|   11 | ram   | 5000   | d1    |
|   22 | shyam | 3000   | d1    |
|   23 | mohan | 5500   | d2    |
|   44 | radha | 8000   | d3    |
|   48 | abhi  | 10000  | d3    |
+------+-------+--------+-------+
i am  executing  the following query :
mysql> select  depid,count(depid) from emp where salary >5100 group by depid;
and getting following result :
+-------+--------------+
| depid | count(depid) |
+-------+--------------+
| d2    |            1 |
| d3    |            2 |
+-------+--------------+
2 rows in set (0.00 sec)
i wants out put like this :
+-------+--------------+
| depid | count(depid) |
+-------+--------------+
 |d1    |            0 |
| d2    |            1 |
| d3    |            2 |
+-------+--------------+
thanks in advance .
csghanny.

Answer 1

Hi
csghanny,
You question seems to be wrong.
Because you are providing the filter condition where salary is greater than 5100. and for department d1, there is no salary more than 5100.
+------+-------+--------+-------+
| eid  | ename | salary | depid |
+------+-------+--------+-------+
|   11 | ram   | 5000   | d1    |
|   22 | shyam | 3000   | d1    |
|   23 | mohan | 5500   | d2    |
|   44 | radha | 8000   | d3    |
|   48 | abhi  | 10000  | d3    |
+------+-------+--------+-------+
select  depid, count(depid) from emp where salary >5100 group by depid;
so there is no chance that this query will return the output what you are expecting.
let us know, if you requirement is something different, so we can help you.
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