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Wrap around to first value and implement MySQL ORDER BY ASC and DESC in a single query
Let us first create a table −
mysql> create table DemoTable -> ( -> Value int -> ); Query OK, 0 rows affected (3.21 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable values(20); Query OK, 1 row affected (0.78 sec) mysql> insert into DemoTable values(40); Query OK, 1 row affected (0.94 sec) mysql> insert into DemoTable values(30); Query OK, 1 row affected (0.41 sec) mysql> insert into DemoTable values(10); Query OK, 1 row affected (0.26 sec) mysql> insert into DemoTable values(90); Query OK, 1 row affected (0.21 sec) mysql> insert into DemoTable values(70); Query OK, 1 row affected (0.49 sec) mysql> insert into DemoTable values(80); Query OK, 1 row affected (0.23 sec) mysql> insert into DemoTable values(9); Query OK, 1 row affected (0.23 sec) mysql> insert into DemoTable values(8); Query OK, 1 row affected (0.38 sec)
Display all records from the table using select statement −
mysql> select *from DemoTable ;
This will produce the following output −
+-------+ | Value | +-------+ | 20 | | 40 | | 30 | | 10 | | 90 | | 70 | | 80 | | 9 | | 8 | +-------+ 9 rows in set (0.00 sec)
Here is the query to wrap around” to the first value and implement ORDER BY ASC and DESC in a single query −
mysql> select *from DemoTable -> order by Value > 10 desc,Value asc;
This will produce the following output −
+-------+ | Value | +-------+ | 20 | | 30 | | 40 | | 70 | | 80 | | 90 | | 8 | | 9 | | 10 | +-------+ 9 rows in set (0.00 sec)
Updated on: 13-Dec-2019
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