Teradata Package for Python Function Reference | 20.00 - sequence - 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.functions.sequence = sequence(start, stop, step=1, atype=ARRAY_INTEGER('[100]'))
- DESCRIPTION:
Generate a array of numbers from start to stop with given step.
PARAMETERS:
start:
Required Argument.
Specifies the starting value of the sequence (inclusive).
Types: ColumnExpression OR int
stop:
Required Argument.
Specifies the ending value of the sequence (inclusive).
Types: ColumnExpression OR int
step:
Optional Argument.
Specifies the step size for the sequence.
Default Value: 1
Types: ColumnExpression OR int
atype:
Optional Argument.
Specifies the desired array type of the output.
Note:
* The 'atype' must be compatible with INTEGER type value.
Default Value: ARRAY_INTEGER('[100]')
Types: teradatasqlalchemy types object
RETURNS:
ColumnExpression
EXAMPLES:
>>> from teradataml.dataframe.functions import sequence
# Load the data to run the example.
>>> load_example_data("dataframe", "sales")
# Create a DataFrame on 'sales' table.
>>> df = DataFrame("sales")
>>> df
Feb Jan Mar Apr datetime
accounts
Yellow Inc 90.0 NaN NaN NaN 04/01/2017
Jones LLC 200.0 150.0 140.0 180.0 04/01/2017
Red Inc 200.0 150.0 140.0 NaN 04/01/2017
Alpha Co 210.0 200.0 215.0 250.0 04/01/2017
Blue Inc 90.0 50.0 95.0 101.0 04/01/2017
Orange Inc 210.0 NaN NaN 250.0 04/01/2017
# Example 1: Create a array column 'arr_seq' with sequence from 1 to 5.
>>> res = df.assign(arr_seq = sequence(1, 5))
>>> res
Feb Jan Mar Apr datetime arr_seq
accounts
Jones LLC 200.0 150.0 140.0 180.0 17/01/04 (1,2,3,4,5)
Alpha Co 210.0 200.0 215.0 250.0 17/01/04 (1,2,3,4,5)
Blue Inc 90.0 50.0 95.0 101.0 17/01/04 (1,2,3,4,5)
Red Inc 200.0 150.0 140.0 NaN 17/01/04 (1,2,3,4,5)
Yellow Inc 90.0 NaN NaN NaN 17/01/04 (1,2,3,4,5)
Orange Inc 210.0 NaN NaN 250.0 17/01/04 (1,2,3,4,5)
# Example 2: Create a array column 'arr_seq' with step size of 2 from 1 to 10.
>>> res = df.assign(arr_seq = sequence(-10, 5 , 2, atype=ARRAY_BIGINT('[100]')))
>>> res
Feb Jan Mar Apr datetime arr_seq
accounts
Blue Inc 90.0 50.0 95.0 101.0 17/01/04 (-10,-8,-6,-4,-2,0,2,4)
Alpha Co 210.0 200.0 215.0 250.0 17/01/04 (-10,-8,-6,-4,-2,0,2,4)
Orange Inc 210.0 NaN NaN 250.0 17/01/04 (-10,-8,-6,-4,-2,0,2,4)
Red Inc 200.0 150.0 140.0 NaN 17/01/04 (-10,-8,-6,-4,-2,0,2,4)
Jones LLC 200.0 150.0 140.0 180.0 17/01/04 (-10,-8,-6,-4,-2,0,2,4)
Yellow Inc 90.0 NaN NaN NaN 17/01/04 (-10,-8,-6,-4,-2,0,2,4)
>>> res.tdtypes
accounts VARCHAR(length=20, charset='LATIN')
Feb FLOAT()
Jan BIGINT()
Mar BIGINT()
Apr BIGINT()
datetime DATE()
arr_seq ARRAY_BIGINT('[100]')
# Example 3: Create a array column 'arr_seq' with sequence in columns 'start_col', 'stop_col' and 'step_col'.
>>> tdf = df.assign(start_col = 4, stop_col = -6, step_col = -3)
>>> res = tdf.assign(arr_seq = sequence(tdf.start_col, tdf.stop_col, tdf.step_col))
>>> res
Feb Jan Mar Apr datetime start_col step_col stop_col arr_seq
accounts
Orange Inc 210.0 NaN NaN 250.0 17/01/04 4 -3 -6 (4,1,-2,-5)
Blue Inc 90.0 50.0 95.0 101.0 17/01/04 4 -3 -6 (4,1,-2,-5)
Jones LLC 200.0 150.0 140.0 180.0 17/01/04 4 -3 -6 (4,1,-2,-5)
Alpha Co 210.0 200.0 215.0 250.0 17/01/04 4 -3 -6 (4,1,-2,-5)
Yellow Inc 90.0 NaN NaN NaN 17/01/04 4 -3 -6 (4,1,-2,-5)
Red Inc 200.0 150.0 140.0 NaN 17/01/04 4 -3 -6 (4,1,-2,-5)