InterviewSolution
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How Can Queries Be Combined And What Is The Use? |
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Answer» You can combine queries in three relationships:
In a union combination, Web Intelligence takes the all the DATA from both queries, eliminates duplicate ROWS, and builds a COMBINED data set. In an intersection combination, Web Intelligence returns the data that is common to both queries. In a minus combination, Web Intelligence returns the data in the first query that does not appear in the second. You can combine queries in three relationships: In a union combination, Web Intelligence takes the all the data from both queries, eliminates duplicate rows, and builds a combined data set. In an intersection combination, Web Intelligence returns the data that is common to both queries. In a minus combination, Web Intelligence returns the data in the first query that does not appear in the second. |
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