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What is the equivalent of EXCEPT in MySQL?
You cannot use EXCEPT in MySQL, instead use the NOT IN operator. Let us first create a table −
mysql> create table DemoTable ( Number1 int ); Query OK, 0 rows affected (0.71 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable values(100); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable values(200); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values(300); Query OK, 1 row affected (0.13 sec)
Display all records from the table using select statement −
mysql> select * from DemoTable;
This will produce the following output −
+---------+ | Number1 | +---------+ | 100 | | 200 | | 300 | +---------+ 3 rows in set (0.00 sec)
Following is the query to create second table −
mysql> create table DemoTable2 ( Number1 int ); Query OK, 0 rows affected (0.52 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable2 values(100); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable2 values(400); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable2 values(300); Query OK, 1 row affected (0.11 sec)
Display all records from the table using select statement −
mysql> select * from DemoTable2;
This will produce the following output −
+---------+ | Number1 | +---------+ | 100 | | 400 | | 300 | +---------+ 3 rows in set (0.00 sec)
Following is the query to use NOT IN operator in place of EXCEPT −
mysql> select Number1 from DemoTable where Number1 not in (SELECT Number1 FROM DemoTable2);
This will produce the following output −
+---------+ | Number1 | +---------+ | 200 | +---------+ 1 row in set (0.04 sec)
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