except all
This functionality is not described by the SQL standard ISO/IEC 9075. Prefer using the more widely supported except all
.
The table operator minus all
returns the rows of the first result except those that are also in the second.
SELECT …
FROM …
MINUS ALL
SELECT …
FROM …
As with all table operators both sides of minus
must have the same number of columns and their types must be compatible based on their position. All null
values are considered being the same (not distinct) for this operation.
Each occurrence of a row-value in the second result will remove of appearance of this row-value from the first result.
Same functionality in standard SQL: except all
Other table operators:
Union: union [distinct]
, union all
Intersect: intersect [distinct]
, intersect all
The table operation minus all
is not covered by any international standard.
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