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MySQL query to place a specific record on the top
For this, you can use the ORDER BY CASE statement. Let us first create a table −
mysql> create table DemoTable ( StudentName varchar(100), StudentMarks int ); Query OK, 0 rows affected (0.97 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable values('Chris',45);
Query OK, 1 row affected (0.21 sec)
mysql> insert into DemoTable values('John',67);
Query OK, 1 row affected (0.18 sec)
mysql> insert into DemoTable values('David',89);
Query OK, 1 row affected (0.46 sec)
mysql> insert into DemoTable values('John',98);
Query OK, 1 row affected (0.11 sec)
mysql> insert into DemoTable values('Mike',79);
Query OK, 1 row affected (0.12 sec)
mysql> insert into DemoTable values('John',99);
Query OK, 1 row affected (0.11 sec)Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+-------------+--------------+ | StudentName | StudentMarks | +-------------+--------------+ | Chris | 45 | | John | 67 | | David | 89 | | John | 98 | | Mike | 79 | | John | 99 | +-------------+--------------+ 6 rows in set (0.00 sec)
Following is the query to place a specific record on the top −
mysql> select *from DemoTable order by case StudentName when 'John' then 2 else 3 end, StudentName, StudentMarks;
This will produce the following output −
+-------------+--------------+ | StudentName | StudentMarks | +-------------+--------------+ | John | 67 | | John | 98 | | John | 99 | | Chris | 45 | | David | 89 | | Mike | 79 | +-------------+--------------+ 6 rows in set (0.00 sec)
Updated on: 27-Sep-2019
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