Oracle
1Z0-071 · Question #322
1Z0-071 Question #322: Real Exam Question with Answer & Explanation
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Question
Which two are true about a SQL statement using SET operators such as UNION? (Choose two.)
Options
- AThe number, but not names, of columns must be identical for all SELECT statements in the
- BThe data type of each column returned by the second query must be implicitly convertible to the
- CThe data type group of each column returned by the second query must match the data type
- DThe names and number of columns must be identical for all SELECT statements in the query.
- EThe data type of each column returned by the second query must exactly match the data type of
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