What is difference between Union and Union All in MS SQL?
Dung Do Tien
Oct 19 2020
296
What is the difference between Union
and Union All
in MS SQL Server?
Have 1 answer(s) found.
-
M0
Marry Christ Oct 19 2020
I think below is some feature difference between Union and Union All:
UNION
: Merge two or more data fromSelect
clause, always remove the duplicate records.UNION ALL
: Merge two or more data fromSelect
clause, display all duplicate records.
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