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MySQL string manipulation to count only sub-part of duplicate values in IP ADDRESS records?
For such string manipulations, you need to use MySQL SUBSTRING_INDEX(). Let us first create a table −
mysql> create table DemoTable ( SystemIpAddress text ); Query OK, 0 rows affected (0.58 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable values('192.168.130.67');
Query OK, 1 row affected (0.09 sec)
mysql> insert into DemoTable values('192.168.130.87');
Query OK, 1 row affected (0.13 sec)
mysql> insert into DemoTable values('192.168.131.47');
Query OK, 1 row affected (0.31 sec)
mysql> insert into DemoTable values('192.168.134.50');
Query OK, 1 row affected (0.12 sec)
mysql> insert into DemoTable values('192.168.131.12');
Query OK, 1 row affected (0.21 sec)Display all records from the table using select statement −
mysql> select *from DemoTable ;
This will produce the following output −
+-----------------+ | SystemIpAddress | +-----------------+ | 192.168.130.67 | | 192.168.130.87 | | 192.168.131.47 | | 192.168.134.50 | | 192.168.131.12 | +-----------------+ 5 rows in set (0.00 sec)
Following is the query for string manipulation on IP Address records −
mysql> select substring_index(tbl.SystemIpAddress, '.', 3) , count(*) as Total from DemoTable tbl group by substring_index(tbl.SystemIpAddress, '.', 3) order by Total desc limit 5;
This will produce the following output −
+----------------------------------------------+-------+ | substring_index(tbl.SystemIpAddress, '.', 3) | Total | +----------------------------------------------+-------+ | 192.168.130 | 2 | | 192.168.131 | 2 | | 192.168.134 | 1 | +----------------------------------------------+-------+ 3 rows in set (0.00 sec)
Updated on: 07-Oct-2019
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