Can I use… INTERSECT [DISTINCT] (table operator)

1. Explicit keyword distinct not supported
2. Requires the keyword distinct explicitly

The table operator intersect [distinct] returns the rows that are present in both results.

SELECT …
  FROM …
INTERSECT
SELECT …
  FROM …

As with all table operators both sides of intersect must have the same number of columns and their types must be compatible based on their position (see corresponding). All null values are considered being the same (not distinct) for this operation.

Each row-value present in both results will be returned once.

Related

• intersect all

• Other table operators:

  • Except: except [distinct], except all

  • Union: union [distinct], union all

Normative References

The intersect [distinct] operator is defined in ISO/IEC 9075-2 as the optional feature F302-01, “INTERSECT DISTINCT table operator”.