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Oracle® Database SQL Reference 10g Release 2 (10.2) Part Number B14200-02 |
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# Set Operators

Set operators combine the results of two component queries into a single result. Queries containing set operators are called compound queries. Table 4-4 lists SQL set operators. They are fully described, including examples and restrictions on these operators, in "The UNION [ALL], INTERSECT, MINUS Operators".

Table 4-4 Set Operators

Operator | Returns
--- | ---
`UNION` | All distinct rows selected by either query
`UNION ALL` | All rows selected by either query, including all duplicates
`INTERSECT` | All distinct rows selected by both queries
`MINUS` | All distinct rows selected by the first query but not the second