Delete only some rows from a table based on a condition in MySQL

MySQLMySQLi Database

Let us first create a table −

mysql> create table DemoTable
   -> (
   -> Id int,
   -> Name varchar(20)
   -> );
Query OK, 0 rows affected (0.60 sec)

Insert some records in the table using insert command:

Insert some records in the table using insert command:
mysql> insert into DemoTable values(100,'Bob');
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable values(101,'Chris');
Query OK, 1 row affected (0.19 sec)
mysql> insert into DemoTable values(102,'David');
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable values(103,'Sam');
Query OK, 1 row affected (0.08 sec)
mysql> insert into DemoTable values(104,'Carol');
Query OK, 1 row affected (0.10 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable;

This will produce the following output −

+------+-------+
| Id   | Name  |
+------+-------+
| 100  | Bob   |
| 101  | Chris |
| 102  | David |
| 103  | Sam   |
| 104  | Carol |
+------+-------+
5 rows in set (0.00 sec)

Following is the query to delete only limited rows from a table −

mysql> delete from DemoTable
   -> where Id > 102;
Query OK, 2 rows affected (0.10 sec)

Let us check the table records once again −

mysql> select *from DemoTable;

This will produce the following output −

+------+-------+
| Id   | Name  |
+------+-------+
| 100  | Bob   |
| 101  | Chris |
| 102  | David |
+------+-------+
3 rows in set (0.00 sec)
raja
Published on 18-Dec-2019 09:44:53
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