UNION « Result Set « Oracle PL / SQL

1.Union result set in action
2.union with like operator
3.UNION: adds all rows from the first and the second query, eliminate any duplicates, and return the results
4.A UNION query that uses an ORDER BY clause
5.Combining Data with UNION and subquery
6.Combining Data with UNION for single column
8.Union date column
9.Union dba_indexes and dba_tables

10.Union two complex queries and subquery
11.Eliminate the duplication and mimic a UNION operator by appending the DISTINCT operator
12.Take the result of the MULTISET UNION DISTINCT operation and pass it as an argument to the SET operator to eliminate duplicates.
13.Using union in subquery