[MDEV-20021] sql_mode="oracle" does not support MINUS set operator - Jira

This is already available in MariaDB as "EXCEPT"

returns the Result of the query 1 that is not found in the result of query 2

MariaDB [world]> select * From City where id between 456 and 457 except select * from City where id=456;

+-----+------------+-------------+----------+------------+

| ID  | Name       | CountryCode | District | Population |

+-----+------------+-------------+----------+------------+

| 457 | Birmingham | GBR         | England  |    1013000 |

+-----+------------+-------------+----------+------------+

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MariaDB Server