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PQL46 (PQL Function Library - CPM 4.6)

MOVING_AVG

Applies to: CELONIS 4.3 CELONIS 4.4 CELONIS 4.5 CELONIS 4.6

Description

This function calculates the average for each window. It can be applied to INT or FLOAT columns.

Syntax
MOVING_AVG ( table.column, start, end )
NULL handling

NULL values are ignored, meaning that they do not influence the result. If all values of a group are NULL, the result for this group is also NULL.

Examples

[1] Moving average for current row and one row above.

Query

Column1

"Table1"."MONTH"

Column2

MOVING_AVG ( "Table1"."INCOME" , - 1 , 0 )

Input

Output

Table1

MONTH : INT

INCOME : INT

1

100

1

300

2

400

3

300

4

500

Result

Column1 : INT

Column2 : FLOAT

1

100.0

1

200.0

2

350.0

3

350.0

4

400.0

[2] Moving average for current row and one row above with null values.

Query

Column1

"Table1"."MONTH"

Column2

MOVING_AVG ( "Table1"."INCOME" , - 1 , 0 )

Input

Output

Table1

MONTH : INT

INCOME : INT

1

null

1

null

2

400

3

300

4

500

Result

Column1 : INT

Column2 : FLOAT

1

null

1

null

2

400.0

3

350.0

4

400.0

[3] Moving average for current row and one row above. A FILTER is applied, such that only rows with an INCOME value larger than 300 are taken into account.

Query

Filter

FILTER "Table1"."INCOME" > 300;

Column1

"Table1"."MONTH"

Column2

MOVING_AVG ( "Table1"."INCOME" , - 1 , 0 )

Input

Output

Table1

MONTH : INT

INCOME : INT

1

null

1

null

2

400

3

300

4

500

Result

Column1 : INT

Column2 : FLOAT

2

400.0

4

450.0