Set Operators in Oracle PL SQL Interview Questions And Answers For Experience & Freshers | Interview Preparation

Set Operators in Oracle PL SQL Interview Questions And Answers For Experience & Freshers | Interview Preparation

Set operators are used to retrieve data from single or multiple tables. It is also called as vertical joins. when we are using set operators then corresponding expressions must belong to same datatype.

Types of set operators :

1) Union - return values unique time + sorting

2) Union all -return unique + duplicate

3) Intersect -common values

4) Minus - return values in first query those values are not in second query

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