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- Aggregator - sorted input - Informatica
Informatica itself and user base always recommend to use Sorter and then use Aggregator transformation with sorted input to achieve good performance I would like to know why, technically If, sorted input is not given, Aggregator, anyway, does the sorting and then aggregating How come it is anyway, different from doing the explicit sorting and then aggregator (with sorted input) than
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- Calculate count (*) without using aggregator transformation
I was avoiding Aggregator Transformation and Function thinking it would slow down the performance looking into the number of records Please suggest the best approach to achieve my task
- TT_11012: Internal error initializing Btree for Aggregator transformation.
This error occurs when Lookup transformation metadata does not match the lookup table definition This error is generally encountered in case of persistent caches
- Aggregator transformation without selecting group by clause!!
Aggregator transformation without selecting group by clause!! If we ignore to select group by clause in an aggregator transformation ,what will be the output?
- Aggregator - adding condition in aggregator expression
This can be achieved in the following three steps :- 1) Expression transformation :- use a iff condition to define the columns with the particular string and where err_cd=0 2) Aggregator :-Then use the aggregator and use count (*) to count the columns based on err_cd=0 which we have separated befor the aggregator This is just a basic code depending on what u have asked So this execution plan
- Aggregator without any group by
What can be the scenario where I can use aggregator transformation without using any group by on any of the port For ex consdier ID SAL 1 1000 2 2000 3 3000 4 4000 How can I calculate count (*) without using group by clause in aggregator transformation ? I need to use aggregator transformation only Any help would be highly appreciated
- How to transfer all unique rows to 1 target and all . . . - Informatica
D, 1 Now pass the output of expression transformation, aggregator transformation to joiner transformation and join on the products port In the joiner transformation check the property sorted input, then only you can connect both expression and aggregator to joiner transformation The output of joiner will be product, O_dummy, O_count_of_each
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