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Get rows that have common value from the same table with different id in MySQL
For this, you can use GROUP BY HAVING clause. Let us first create a table −
mysql> create table DemoTable1467 -> ( -> Id int, -> Name varchar(20) -> ); Query OK, 0 rows affected (0.64 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable1467 values(100,'Chris'); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable1467 values(110,'David'); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable1467 values(120,'Mike'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable1467 values(100,'Chris'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable1467 values(130,'Carol'); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable1467 values(100,'Chris'); Query OK, 1 row affected (0.20 sec)
Display all records from the table using select statement −
mysql> select * from DemoTable1467;
This will produce the following output −
+------+-------+ | Id | Name | +------+-------+ | 100 | Chris | | 110 | David | | 120 | Mike | | 100 | Chris | | 130 | Carol | | 100 | Chris | +------+-------+ 6 rows in set (0.00 sec)
Here is the query to get rows that have common value from the same table with different id −
mysql> select Id,Name,count(*) as IdCount from DemoTable1467 -> group by Id -> having IdCount > 2;
This will produce the following output −
+------+-------+---------+ | Id | Name | IdCount | +------+-------+---------+ | 100 | Chris | 3 | +------+-------+---------+ 1 row in set (0.00 sec)
Updated on: 10-Dec-2019
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