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What is the difference between UNION and UNION ALL SQL syntax
What is the difference between UNION and UNION ALL SQL syntax ?
✍: Guest
UNION SQL syntax is used to select information from two tables. But it selects only
distinct records from both the table, while UNION ALL selects all records from both the
tables.
Note : Selected records should have same datatype or else the syntax will not work.
2007-10-25, 4721👍, 0💬
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