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#1 2015-04-21 07:11:28
- alisiddiqui
- Banned
- Registered: 2015-02-23
- Posts: 949
UNION and UNION ALL:
Question:
Difference between UNION and UNION ALL:
Option A):
UNION returns only unique records from both tables. UNION ALL returns all records from both tables.
Option B):
UNION ALL is no longer supported in sql server 2000 onward.
Option C):
Both are similar
Correct Answer is Option A):
UNION returns only unique records from both tables. UNION ALL returns all records from both tables.
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2015-04-21 07:11:28
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Re: UNION and UNION ALL:
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