Teradata Package for Python Function Reference on VantageCloud Lake - like - 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
- 20.00.00.08
- Published
- November 2025
- ft:locale
- en-US
- ft:lastEdition
- 2025-12-05
- dita:id
- TeradataPython_FxRef_Lake_2000
- Product Category
- Teradata Vantage
- teradataml.dataframe.sql.DataFrameColumn.like = like(self, other, escape_char=None)
- DESCRIPTION:
Function which is used to match the pattern.
PARAMETERS:
other:
Required Argument.
Specifies a string to match. String match is case sensitive.
Types: str OR ColumnExpression
escape_char:
Optional Argument.
Specifies the escape character to be used in the pattern.
Types: str with one character
RETURNS:
ColumnExpression.
EXAMPLES:
# Load example data.
>>> load_example_data("teradataml", "pattern_matching_data")
>>> df = DataFrame('pattern_matching_data')
data pattern level
id
5 prod_01 prod_01% Beginner
8 log%2024 l_g% Beginner
2 user%2025 user!%% Beginner
6 prod%v2 prod!_% Novice
4 data%backup data@%% Advanced
10 backup_9 restore!_9 Beginner
7 log_file log^_file Advanced
1 user_Alpha user!_% Advanced
3 data_2024 d% Novice
9 temp_file temp!__% Novice
# Example 1: Find out the records which starts with 'A' in the column 'level'.
>>> df = df[df.level.like('A%')]
>>> df
data pattern level
id
4 data%backup data@%% Advanced
7 log_file log^_file Advanced
1 user_Alpha user!_% Advanced
>>>
# Example 2: Create a new Column with values as -
# 1 if value of column 'stats' starts with 'N' and third letter is 'v',
# 0 otherwise. Do not ignore case.
>>> from sqlalchemy.sql.expression import case as case_when
>>> df.assign(new_col = case_when((df.level.like('N_v%').expression, 1), else_=0))
data pattern level new_col
id
3 data_2024 d% Novice 1
1 user_Alpha user!_% Advanced 0
8 log%2024 l_g% Beginner 0
2 user%2025 user!%% Beginner 0
10 backup_9 restore!_9 Beginner 0
9 temp_file temp!__% Novice 1
6 prod%v2 prod!_% Novice 1
5 prod_01 prod_01% Beginner 0
4 data%backup data@%% Advanced 0
7 log_file log^_file Advanced 0
>>>
# Example 3: Find out the records where the value in the 'data' column
# matches the pattern specified in the 'pattern' column.
>>> df = df[df.data.like(df.pattern)]
>>> df
data pattern level
id
3 data_2024 d% Novice
8 log%2024 l_g% Beginner
5 prod_01 prod_01% Beginner
>>>
# Example 4: Find out the records where the value in the 'data' column
# matches the pattern specified in the 'pattern' column considering the
# escape character as '!'.
>>> df = df[df.data.like(df.pattern, escape_char='!')]
>>> df
data pattern level
id
8 log%2024 l_g% Beginner
9 temp_file temp!__% Novice
3 data_2024 d% Novice
2 user%2025 user!%% Beginner
1 user_Alpha user!_% Advanced
5 prod_01 prod_01% Beginner
>>>