How to select particular range of values in a MySQL table?
In order to select particular range of values in a MySQL table, you can use WHERE clause. Let us first create a table:
mysql> create table DemoTable
(
CustomerId int NOT NULL AUTO_INCREMENT PRIMARY KEY,
CustomerName varchar(200),
CustomerAge int,
isRegularCustomer bool
);
Query OK, 0 rows affected (0.57 sec)
Following is the query to insert some records in the table using insert command:
mysql> insert into DemoTable(CustomerName,CustomerAge,isRegularCustomer)values('Chris',24,true);
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable(CustomerName,CustomerAge,isRegularCustomer)values('Robert',26,false);
Query OK, 1 row affected (0.22 sec)
mysql> insert into DemoTable(CustomerName,CustomerAge,isRegularCustomer)values('Mike',27,false);
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable(CustomerName,CustomerAge,isRegularCustomer)values('Larry',22,true);
Query OK, 1 row affected (0.16 sec)
mysql> insert into DemoTable(CustomerName,CustomerAge,isRegularCustomer)values('Sam',30,true);
Query OK, 1 row affected (0.20 sec)
mysql> insert into DemoTable(CustomerName,CustomerAge,isRegularCustomer)values('Carol',26,true);
Query OK, 1 row affected (0.16 sec)Following is the query to display records from the table using select command:
mysql> select *from DemoTable;
This will produce the following output:
+------------+--------------+-------------+-------------------+
| CustomerId | CustomerName | CustomerAge | isRegularCustomer |
+------------+--------------+-------------+-------------------+
| 1 | Chris | 24 | 1 |
| 2 | Robert | 26 | 0 |
| 3 | Mike | 27 | 0 |
| 4 | Larry | 22 | 1 |
| 5 | Sam | 30 | 1 |
| 6 | Carol | 26 | 1 |
+------------+--------------+-------------+-------------------+
6 rows in set (0.00 sec)
Following is the query to select particular range of values in a MySQL table. Here, we are selecting customer records with age greater than equal to 24 and less than equal to 27. Also, the customer should be a regular customer i.e. with 1 value under “isRegularCustomer” column:
mysql> select CustomerId,CustomerName,CustomerAge,isRegularCustomer from DemoTable
where isRegularCustomer=true AND CustomerAge >=24 AND CustomerAge <= 27;
This will produce the following output
+------------+--------------+-------------+-------------------+
| CustomerId | CustomerName | CustomerAge | isRegularCustomer |
+------------+--------------+-------------+-------------------+
| 1 | Chris | 24 | 1 |
| 6 | Carol | 26 | 1 |
+------------+--------------+-------------+-------------------+
2 rows in set (0.00 sec)
Published on 29-Apr-2019 11:40:34
