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Applies to:  

Status
colourGreen
titleCelonis 4.0
 
Status
colourGreen
titleCelonis 4.2
 
Status
colourGreen
titleCelonis 4.3
 
Status
colourGreen
titleCelonis 4.4
 

Description

Calculates the median of the specified column for each element of the given parent table.

The median is the middle element of a group. If the group has an even number of elements, the upper value of the two middle values is taken as the median.

Like the regular MEDIAN operator, the column can either be an INT, FLOAT or DATE column. The data type of the result is the same as the input column data type.

If no value in the child table exists for the element in the parent table (either because all values of the child table column are filtered out, or because no corresponding value exists in the first place), NULL will be returned.

Syntax


Code Block
languagetext
themeDJango
PU_MEDIAN ( parent_table, child_table.column [, filter_expression] )


Examples

Calculate the maximum of the case table values for each company code:


Panel
titleQuery
Column1


Code Block
languagetext
themeDJango
"companyDetail"."companyCode"


Column2


Code Block
languagetext
themeDJango
PU_MEDIAN("companyDetail", "caseTable"."value")




Panel
titleInput
caseTable


caseId : INTcompanyCode : STRINGvalue : INT
1
'001'
600
2
'001'
400
3
'001'
200
4
'002'
300
5
'002'
300
6
'003'
200


companyDetail


companyCode : STRINGcountry : STRING
'001''DE'
'002''DE'
'003''US'



Foreign Keys


caseTable.companyCodecompanyDetail.companyCode




Panel
titleOutput
Result


Column1 : STRINGColumn2 : INT
'001'
400
'002'
300
'003'
200





Calculate the median of the case table values for each company code. Only consider cases with an ID larger than 2:


Panel
titleQuery
Column1


Code Block
languagetext
themeDJango
"companyDetail"."companyCode"


Column2


Code Block
languagetext
themeDJango
PU_MEDIAN("companyDetail", "caseTable"."value", "caseTable"."caseID" > 2)




Panel
titleInput
caseTable


caseId : INTcompanyCode : STRINGvalue : INT
1
'001'
600
2
'001'
400
3
'001'
200
4
'002'
300
5
'002'
300
6
'003'
200


companyDetail


companyCode : STRINGcountry : STRING
'001''DE'
'002''DE'
'003''US'



Foreign Keys


caseTable.companyCodecompanyDetail.companyCode




Panel
titleOutput
Result


Column1 : STRINGColumn2 : INT
'001'
200
'002'
300
'003'
200





Calculate the median 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:


Panel
titleQuery
Column1


Code Block
languagetext
themeDJango
"companyDetail"."companyCode"


Column2


Code Block
languagetext
themeDJango
PU_MEDIAN("companyDetail", "caseTable"."value", "caseTable"."caseID" > 3)




Panel
titleInput
caseTable


caseId : INTcompanyCode : STRINGvalue : INT
1
'001'
600
2
'001'
400
3
'001'
200
4
'002'
300
5
'002'
300
6
'003'
200


companyDetail


companyCode : STRINGcountry : STRING
'001''DE'
'002''DE'
'003''US'



Foreign Keys


caseTable.companyCodecompanyDetail.companyCode




Panel
titleOutput
Result


Column1 : STRINGColumn2 : INT
'001'
null
'002'
300
'003'
200





Example over three tables: For each entry in table B, calculate the median of the values that are larger than 100 in table C. Tables B and C do not have a direct connection, but are connected via table A:


Panel
titleQuery
Column1


Code Block
languagetext
themeDJango
"B"."B_KEY"


Column2


Code Block
languagetext
themeDJango
PU_MEDIAN("B", "C"."VALUE", "C"."VALUE" >100)




Panel
titleInput
A


B_KEY : INTC_KEY : STRINGVALUE : INT
1
'A'
100
1
'B'
200
2
'C'
300
2
'D'
400
3
'E'
500
3
'F'
600


B


B_KEY : INT
1
2


C


C_KEY : STRINGVALUE : INT
'A'
400
'A'
100
'A'
200
'B'
100
'C'
200
'D'
500



Foreign Keys


C.C_KEYA.C_KEY
B.B_KEYA.B_KEY




Panel
titleOutput
Result


Column1 : INTColumn2 : INT
1
400
2
500
For each case ID, calculate the median of the case table values for the associated company code using DOMAIN_TABLE:
Panel
titleQuery
Column1
Code Block
languagetext
themeDJango
"caseTable"."caseId"
Column2
Code Block
languagetext
themeDJango
PU_MEDIAN(DOMAIN_TABLE("caseTable"."companyCode"), "caseTable"."value")
Panel
titleInput
caseTable
caseId : INTcompanyCode : STRINGvalue : INT
1
'001'
600
2
'001'
400
3
'001'
200
4
'002'
300
5
'002'
300
6
'003'
200
Panel
titleOutput
Result
Column1 : INTColumn2 : INT
1
400
2
400
3
400
4
300
5
300
6
200