The UNION ALL set operator returns all rows selected by either query. That means any duplicates will remain in the final result set. In the example below, notice there are two rows each for ...

Learn how to use the UNION operator in SQL, a set operation that combines the rows from two or more queries into one result set. Discover the benefits, limitations, and examples of using it.

I need to form the equivalent of a Union Join in Oracle 8i, even though a Union Join doesn't appear to be supported in 8i. I might be able to manipulate a Full Outer Join to get the results I need ...

Generating an union all insert with sequence in Oracle - akaiserg/Insert-with-unionall-and-sequence-oracle. ... return sql; } So, by getting a list of ids of a sequence in one shot and also making an ...