E071-03, “EXCEPT DISTINCT table operator”

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

Related

• E071-01, “UNION DISTINCT table operator”

• E071-02, “UNION ALL table operator”

• F301, “CORRESPONDING in query expressions”

• F302, “INTERSECT table operator”

  • F302-01, “INTERSECT DISTINCT table operator”

  • F302-02, “INTERSECT ALL table operator”

• F304, “EXCEPT ALL table operator”

• T551, “Optional key words for default syntax”

Normative References

E071-03, “EXCEPT DISTINCT table operator”, is a mandatory feature of ISO/IEC 9075-2:2023. It was present in SQL:1999, which was the first revision of the SQL standard that enumerated the individual features. In SQL-92 except—without the optional keyword distinct—was part of the intermediate level.