why less number of records in loop?
why more number of records in traps?
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Answer / manveer
More no of records in trap because:
For example:
A >- B -< C
( Employees >-- Showroom --< Salary)
- Each showroom has many employees
- Each showroom has many annual salary figures
The number of employee records should not impact the total salary on the report.
If a query is written that spanned all three of those tables the data from table A and C, there would be duplicated and the measure values would be exaggerated. For example,
- X rows on the left
- Y rows on the right
- X * Y rows in the combined set
Less no of records in loop as there is an extra join in a loop, that means one more restriction to the data. That extra join filter out the data and restrict the no of rows retrieved
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