Teradata Package for Python Function Reference | 20.00 - array_avg - Teradata Package for Python - Look here for syntax, methods and examples for the functions included in the Teradata Package for Python.
Teradata® Package for Python Function Reference - 20.00
- Deployment
- VantageCloud
- VantageCore
- Edition
- VMware
- Enterprise
- IntelliFlex
- Product
- Teradata Package for Python
- Release Number
- 20.00.00.11
- Published
- August 2026
- ft:locale
- en-US
- ft:lastEdition
- 2026-08-13
- dita:id
- TeradataPython_FxRef_Enterprise_2000
- Product Category
- Teradata Vantage
- teradataml.dataframe.sql.DataFrameColumn.array_avg = array_avg(self, lower_bound=None, upper_bound=None)
- DESCRIPTION:
Compute the average of all elements in the array.
PARAMETERS:
lower_bound:
Optional Argument.
Specifies the starting index for average calculation (inclusive).
Note:
* If specified, both "lower_bound" and "upper_bound" arguments must be provided.
Types: int
upper_bound:
Optional Argument.
Specifies the ending index for average calculation (inclusive).
Note:
* If specified, both "lower_bound" and "upper_bound" arguments must be provided.
Types: int
RETURNS:
ColumnExpression
EXAMPLES:
>>> from teradataml import *
>>> load_example_data("array", "array_table")
# Create a DataFrame on 'array_table'.
>>> df = DataFrame("array_table")
>>> df
arr1 arr2 arr3
id
1 (10,20,30,40,50) (23,200,215,40,21) ('ab','bc','cd','ab','ef')
4 (180,28,38,48,58) (30,NULL,NULL,250,27) ('mn','no',NULL,'op','pq')
2 (150,25,35,45,55) (28,50,95,90,26) ('xy','yz','za','ab','xy')
6 (16,261,36,46,56) (29,170,160,46,25) ('uv','xy','ab','xy','yz')
3 (12,22,320,42,52) (25,22,140,200,23) ('pq','ab','ab','st','tu')
5 (14,24,34,44,54) (26,NULL,NULL,180,24) ('ij','jk',NULL,'kl','lm')
# Example 1: Calculate average of all elements in array column 'arr1'.
>>> res = df.assign(avg_res = df.arr1.array_avg())
>>> res
arr1 arr2 arr3 avg_res
id
1 (10,20,30,40,50) (23,200,215,40,21) ('ab','bc','cd','ab','ef') 30.0
4 (180,28,38,48,58) (30,NULL,NULL,250,27) ('mn','no',NULL,'op','pq') 70.4
2 (150,25,35,45,55) (28,50,95,90,26) ('xy','yz','za','ab','xy') 62.0
6 (16,261,36,46,56) (29,170,160,46,25) ('uv','xy','ab','xy','yz') 83.0
3 (12,22,320,42,52) (25,22,140,200,23) ('pq','ab','ab','st','tu') 89.6
5 (14,24,34,44,54) (26,NULL,NULL,180,24) ('ij','jk',NULL,'kl','ab') 34.0
# Example 2: Calculate average of elements in array column 'arr1' from first position
# to third position.
>>> res = df.assign(avg_res = df.arr1.array_avg(lower_bound=1, upper_bound=3))
>>> res
arr1 arr2 arr3 avg_res
id
1 (10,20,30,40,50) (23,200,215,40,21) ('ab','bc','cd','ab','ef') 20.000000
4 (180,28,38,48,58) (30,NULL,NULL,250,27) ('mn','no',NULL,'op','pq') 82.000000
2 (150,25,35,45,55) (28,50,95,90,26) ('xy','yz','za','ab','xy') 70.000000
6 (16,261,36,46,56) (29,170,160,46,25) ('uv','xy','ab','xy','yz') 104.333333
3 (12,22,320,42,52) (25,22,140,200,23) ('pq','ab','ab','st','tu') 118.000000
5 (14,24,34,44,54) (26,NULL,NULL,180,24) ('ij','jk',NULL,'kl','ab') 24.000000