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)

Krantik Chavan

Published on 29-Apr-2019 08:10:34

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