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Database - Advanced SQL - Discussion

Discussion Forum : Advanced SQL - General Questions (Q.No. 10)
Advanced SQL
10.
A UNION query is which of the following?
Combines the output from no more than two queries and must include the same number of columns.
Combines the output from no more than two queries and does not include the same number of columns.
Combines the output from multiple queries and must include the same number of columns.
Combines the output from multiple queries and does not include the same number of columns.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
1 comments Page 1 of 1.
Mithun said:   1 decade ago
A single UNION can combine only 2 sql query at a time.
(1)
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