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MySQL CASE WHEN with SELECT to display odd and even ids?
Let us first create a table −
mysql> create table DemoTable ( PageId int ); Query OK, 0 rows affected (0.85 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable values(233); Query OK, 1 row affected (0.36 sec) mysql> insert into DemoTable values(34); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable values(76); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable values(89); Query OK, 1 row affected (0.26 sec)
Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+--------+ | PageId | +--------+ | 233 | | 34 | | 76 | | 89 | +--------+ 4 rows in set (0.00 sec)
Following is the query for CASE WHEN with SELECT −
mysql> select PageId, case when PageId %2 !=0 then 'PageId is odd' else 'PageId is even' end AS Result from DemoTable;
This will produce the following output −
+--------+----------------+ | PageId | Result | +--------+----------------+ | 233 | PageId is odd | | 34 | PageId is even| | 76 | PageId is even| | 89 | PageId is odd| +--------+----------------+ 4 rows in set (0.00 sec)
Updated on: 10-Oct-2019
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