Teradata Package for Python Function Reference | 20.00 - groupby - 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.dataframe.DataFrame.groupby = groupby(self, columns_expr, **kwargs)
- DESCRIPTION:
Applies GroupBy to one or more columns of a teradataml Dataframe.
The result will always behaves like calling groupby with as_index=False
in pandas.
PARAMETERS:
columns_expr:
Required Argument.
Specifies the column name(s) to group by.
Types: str OR list of Strings (str)
kwargs:
Optional Argument.
Specifies keyword arguments.
option:
Optional Argument.
Specifies the groupby option.
Permitted Values: "CUBE", "ROLLUP", None
Types: str or NoneType
include_grouping_columns:
Optional Argument.
Specifies whether to include aggregations on the grouping column(s) or not.
When set to True, the resultant DataFrame will have the aggregations on the
columns mentioned in "columns_expr". Otherwise, resultant DataFrame will not have
aggregations on the columns mentioned in "columns_expr".
Default Value: False
Types: bool
NOTES:
* Users can still apply teradataml DataFrame methods (filters/sort/etc) on top of the result.
* Consecutive operations of grouping, i.e., groupby_time(), resample() and groupby() are not permitted.
An exception will be raised. Following are some cases where exception will be raised as
"Invalid operation applied, check documentation for correct usage."
a. df.resample().groupby()
b. df.resample().resample()
c. df.resample().groupby_time()
* This method does not support operations on array columns.
RETURNS:
teradataml DataFrameGroupBy Object
RAISES:
TeradataMlException
EXAMPLES:
# Load the data to run the example.
>>> load_example_data("dataframe","admissions_train")
# Create a DataFrame on 'admissions_train' table.
>>> df = DataFrame("admissions_train")
>>> df
masters gpa stats programming admitted
id
15 yes 4.00 Advanced Advanced 1
34 yes 3.85 Advanced Beginner 0
13 no 4.00 Advanced Novice 1
38 yes 2.65 Advanced Beginner 1
5 no 3.44 Novice Novice 0
40 yes 3.95 Novice Beginner 0
7 yes 2.33 Novice Novice 1
22 yes 3.46 Novice Beginner 0
26 yes 3.57 Advanced Advanced 1
17 no 3.83 Advanced Advanced 1
# Example 1: Find the minimum value of all valid columns by
# grouping the DataFrame with column 'masters'.
>>> df1 = df.groupby(["masters"])
>>> df1.min()
masters min_id min_gpa min_stats min_programming min_admitted
0 no 3 1.87 Advanced Advanced 0
1 yes 1 1.98 Advanced Advanced 0
# Example 2: Find the sum of all valid columns by grouping the DataFrame
# with columns 'masters' and 'admitted'. Include grouping columns
# in aggregate function 'sum'.
>>> df1 = df.groupby(["masters", "admitted"], include_grouping_columns=True)
>>> df1.sum()
masters admitted sum_id sum_gpa sum_admitted
0 yes 1 188 34.35 10
1 yes 0 289 43.36 0
2 no 0 41 6.44 0
3 no 1 302 57.52 16
# Example 3: Find the sum of all valid columns by grouping the DataFrame with
# columns 'masters' and 'admitted'. Do not include grouping columns
# in aggregate function 'sum'.
>>> df1 = df.groupby(["masters", "admitted"], include_grouping_columns=False)
>>> df1.sum()
masters admitted sum_id sum_gpa
0 yes 0 289 43.36
1 no 0 41 6.44
2 no 1 302 57.52
3 yes 1 188 34.35