Teradata Package for Python Function Reference on VantageCloud Lake - slice - 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 on VantageCloud Lake
- Deployment
- VantageCloud
- Edition
- Lake
- 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_Lake_2000
- Product Category
- Teradata Vantage
- teradataml.dataframe.sql.DataFrameColumn.slice = slice(self, start, length)
- DESCRIPTION:
Slice the array from the specified starting index for the given length.
PARAMETERS:
start:
Required Argument.
Specifies the starting index (1-based) for slicing.
Note:
* If start is negative, the slice starts from the end of the array.
Types: ColumnExpression OR int
length:
Required Argument.
Specifies the number of elements to include in the slice.
Types: ColumnExpression OR 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: Slice array column 'arr1' starting from index 2 for length 3.
>>> res = df.assign(sliced_arr = df.arr1.slice(start=2, length=3))
>>> res
arr1 arr2 arr3 sliced_arr
id
1 (10,20,30,40,50) (23,200,215,40,21) ('ab','bc','cd','ab','ef') (20,30,40)
3 (12,22,320,42,52) (25,22,140,200,23) ('pq','ab','ab','st','tu') (22,320,42)
6 (16,261,36,46,56) (29,170,160,46,25) ('uv','xy','ab','xy','yz') (261,36,46)
2 (150,25,35,45,55) (28,50,95,90,26) ('xy','yz','za','ab','xy') (25,35,45)
5 (14,24,34,44,54) (26,NULL,NULL,180,24) ('ij','jk',NULL,'kl','lm') (24,34,44)
4 (180,28,38,48,58) (30,NULL,NULL,250,27) ('mn','no',NULL,'op','pq') (28,38,48)
# Example 2: Slice array column 'arr2' using ColumnExpression for start and length.
>>> tdf = df.assign(start_index=-3, slice_length=2)
>>> res = tdf.assign(sliced_arr = tdf.arr2.slice(tdf.start_index, tdf.slice_length))
>>> res
arr1 arr2 arr3 slice_length start_index sliced_arr
id
5 (14,24,34,44,54) (26,NULL,NULL,180,24) ('ij','jk',NULL,'kl','lm') 2 -3 (NULL,180)
2 (150,25,35,45,55) (28,50,95,90,26) ('xy','yz','za','ab','xy') 2 -3 (95,90)
4 (180,28,38,48,58) (30,NULL,NULL,250,27) ('mn','no',NULL,'op','pq') 2 -3 (NULL,250)
1 (10,20,30,40,50) (23,200,215,40,21) ('ab','bc','cd','ab','ef') 2 -3 (215,40)
3 (12,22,320,42,52) (25,22,140,200,23) ('pq','ab','ab','st','tu') 2 -3 (140,200)
6 (16,261,36,46,56) (29,170,160,46,25) ('uv','xy','ab','xy','yz') 2 -3 (160,46)