Oracle
1Z0-061 · Question #22
1Z0-061 Question #22: Real Exam Question with Answer & Explanation
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Question
Which statement is true regarding the UNION operator?
Options
- ABy default, the output is not sorted.
- BNull values are not ignored during duplicate checking.
- CNames of all columns must be identical across all select statements.
- DThe number of columns selected in all select statements need not be the same.
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