Show row with zero value after addition in MySQL?

For this, you can use an aggregate function SUM() along with the condition. Let us first create a table −

mysql> create table DemoTable
   -> (
   -> Status varchar(20)
   -> );
Query OK, 0 rows affected (1.22 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable values('active');
Query OK, 1 row affected (0.11 sec)
mysql> insert into DemoTable values('active');
Query OK, 1 row affected (0.15 sec)
mysql> insert into DemoTable values('active');
Query OK, 1 row affected (0.30 sec)
mysql> insert into DemoTable values('active');
Query OK, 1 row affected (0.18 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable;

This will produce the following output −

+--------+
| Status |
+--------+
| active |
| active |
| active |
| active |
+--------+
4 rows in set (0.00 sec)

Here is the query to display row with zero value −

mysql> select
   -> sum(Status='active') as 'CountOfActive',
   -> sum(Status='inactive') as 'CountOfInActive'
   -> from DemoTable;

This will produce the following output. Here, for status inactive none of the records are in the table, therefore 0 would be visible −

+---------------+-----------------+
| CountOfActive | CountOfInActive |
+---------------+-----------------+
|             4 |               0 |
+---------------+-----------------+
1 row in set (0.30 sec)

AmitDiwan

Updated on: 13-Dec-2019

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