PU_MODE
Description
Calculates the mode of the specified source column for each element in the given target table. For multi-modal input, where there are several result candidates, the element with the smallest value is chosen. For elements of type STRING, the smallest value is determined by its lexicographical order.
Syntax
PU_MODE ( target_table, source_table.column [, filter_expression] )
target_table: The table to which the aggregation result should be pulled. This can be:
a table from the data model. It needs to be, directly or indirectly, connected to the source_table, and there must be a 1:N relationship between the target_table and the source_table. Further documentation about join relationships can be found in Join functionality.
DOMAIN_TABLE or CONSTANT (see Pull Up Aggregation Table Options).
source_table.column: The column which should be aggregated for every row of the target_table.
filter_expression (optional): An optional filter expression to specify which values of the source_table.column should be taken into account for the aggregation.
NULL handling
If no value in the source table column exists for the element in the target table (either because all values of the source table are filtered out, or because no corresponding value exists in the first place), NULL will be returned. NULL values in the source table column are treated as if the row does not exist.
Examples
[1] Calculate the mode of the case table values for each company code: | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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[2] Calculate the mode of the case table values for each company code: | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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[3] PU-functions can be used inside another aggregation function. In this example, the maximum value of all mode case table values for each company code is calculated: | |||||||||||||||||||||||||||||||||||||
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[4] Calculate the mode of the case table values for each company code. Only consider cases with an ID larger than 2: | |||||||||||||||||||||||||||||||||||||||||||
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[5] Calculate the sum of the case table values for each company code. Only consider cases with an ID larger than 3. All case table values for companyCode '001' are filtered out, which means that in this case, NULL is returned. | |||||||||||||||||||||||||||||||||||||||||||
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