Itqualityassurance
- Which set operation is used to combine two or more similar sets?
- Which are the four set operations Explain any two SET operations with examples?
- What is the precedence of the set operators?
Which set operation is used to combine two or more similar sets?
UNION ALL – combines two or more result sets including duplicate values. INTERSECT – includes ONLY the values present between two or more result sets. EXCEPT (MINUS on Oracle) – includes ONLY results from first result set that are NOT included in second result set.
Which are the four set operations Explain any two SET operations with examples?
There are four main set operations which include set union, set intersection, set complement, and set difference.
What is the precedence of the set operators?
All of the set operators have the same precedence. In complex queries that include more than one set operator, the precedence of operators is from left to right. Use parentheses to group set operators and their operands, if you need to override the default left-to-right precedence of set operators.
