Teradata Package for LangChain Function Reference - add_texts - Teradata® Package for LangChain - Look here for syntax, methods and examples for the functions included in the Teradata langchain-teradata package.
Teradata® Package for LangChain Function Reference
- Deployment
- VantageCloud
- Edition
- Enterprise
- Product
- Teradata® Package for LangChain
- Release Number
- 20.00.00.01
- Published
- December 2025
- ft:locale
- en-US
- ft:lastEdition
- 2025-12-19
- dita:id
- Langchain-Teradata_FxRef_Lake
- Product Category
- Teradata Vantage
- libs.teradata.langchain_teradata.TeradataVectorStore.add_texts = add_texts(self, texts, **kwargs)
- DESCRIPTION:
Adds text/list of texts to an existing Vector Store.
Creates a new Vector Store in case it does not exists.
PARAMETERS:
name:
Required Argument.
Specifies the name of the vector store to be created
from input list of raw text strings.
Types: str
texts:
Required Argument.
Specifies the text or list of texts to be added to the vector store.
Types: str or list of str
update_style:
Optional Argument.
Specifies the style to be used for alter operation of the data
from the vector store when "search_algorithm" is KMEANS/HNSW.
Default Value: MINOR
Permitted Values: MINOR, MAJOR
Types: str
metadata_operation:
Optional Argument.
Specifies the operation to be performed on metadata columns
during update.
- ADD - add new metadata columns
- DELETE - remove existing metadata columns
- MODIFY - change the description of the existing metadata columns
Note:
* Applicable to all store types except the METADATA-BASED store type.
Default Value: ADD
Permitted Values: ADD, DELETE, MODIFY
Types: str
description:
Optional Argument.
Specifies the description of the vector store.
Types: str
target_database:
Optional Argument.
Specifies the database name where the vector store is created.
Notes:
* If not specified, vector store is created in the database
which is in use.
Types: str
vector_column:
Optional Argument.
Specifies the name of the column to be used for storing
the embeddings.
Default Value: vector_index
Types: str
metadata_columns:
Optional Argument.
Specifies the list of input column names to be used for metadata.
These columns just get accumulated in the vector store.
Types: list[str]
metadata_descriptions:
Optional Argument.
Specifies the deescriptions of the metadata columns. One value for each metadata column.
Note:
Applicable to all store types except metadata-based store type.
Types: list[str]
use_simd:
Optional Argument.
Specifies whether to use SIMD for faster processing.
Types: bool
embedding_datatype:
Optional Argument.
Specifies the data type of the embeddings to be used.
Default Value: VECTOR32
Permitted Values: VECTOR32, VECTOR64
Types: str
embeddings_dims:
Required for NVIDIA NIM, Optional otherwise.
Specifies the number of dimensions to be used for generating the embeddings.
The value depends on the "embeddings".
Note:
* Default dimesions is set to 1024 for embedding-based vector store.
Default Value:
For AWS:
* amazon.titan-embed-text-v1: 1536
* amazon.titan-embed-image-v1: 1024
* amazon.titan-embed-text-v2:0: 1024
For Azure:
* text-embedding-ada-002: 1536
* text-embedding-3-small: 1536
* text-embedding-3-large: 3072
Permitted Values:
*For AWS:
* amazon.titan-embed-text-v1: 1536
* amazon.titan-embed-image-v1: [256, 384, 1024]
* amazon.titan-embed-text-v2:0: [256, 512, 1024]
*For Azure:
* text-embedding-ada-002: 1536 only
* text-embedding-3-small: 1 <= dims <= 1536
* text-embedding-3-large: 1 <= dims <= 3072
Types: str
chat_completion_max_tokens:
Required for NVIDIA NIM, Optional otherwise.
Specifies the maximum number of tokens to be generated by the
"chat_completion_model".
Default Value: 16384
Permitted Values: [1, 16384]
Types: int
model_urls:
Optional Argument.
Specifies the URL and models to be used for embedding, chat completion
and guardrails.
Note:
* Refer to the ModelUrlParams class for more details.
Types: ModelUrlParams
embedding:
Required for NVIDIA NIM, Optional otherwise.
Specifies the embeddings model to be used for generating the
embeddings.
Default Value:
For AWS: amazon.titan-embed-text-v2:0
For Azure: text-embedding-3-small
Permitted Values:
For AWS:
* amazon.titan-embed-text-v1
* amazon.titan-embed-image-v1
* amazon.titan-embed-text-v2:0
For Azure:
* text-embedding-ada-002
* text-embedding-3-small
* text-embedding-3-large
Types: str, TeradataAI, LangChain Embeddings
chat_completion_model:
Required for NVIDIA NIM, Optional otherwise.
Specifies the name of the chat completion model to be used for
generating text responses.
Default Value:
For AWS: anthropic.claude-3-haiku-20240307-v1:0
For Azure: gpt-35-turbo-16k
Permitted Values:
*For AWS:
* anthropic.claude-3-haiku-20240307-v1:0
* anthropic.claude-instant-v1
* anthropic.claude-3-5-sonnet-20240620-v1:0
*For Azure:
* gpt-35-turbo-16k
Types: str, TeradataAI, LangChain BaseChatModel
RETURNS:
None
RAISES:
None
EXAMPLES:
# Example 1: Add texts to an existing content-based vector store "vs_example_1"
# Create an instance of a content-based vector store by
# passing list of raw strings in "texts" and
# "amazon.titan-embed-text-v1" in "embedding".
>>> from langchain_teradata import TeradataVectorStore
>>> vs = TeradataVectorStore.from_texts(name="vs_example_1",
texts=["This is a sample text.",
"This is another sample text."],
embedding="amazon.titan-embed-text-v1")
>>> vs.add_texts(texts = ["This is a sample text1.",
"This is another sample text2."])
# Example 2: Create a new content-based vector store "vs_example_2".
>>> vs = TeradataVectorStore()
>>> vs.add_texts(name = "vs_example_2",
texts = ["This is a sample text.",
"This is another sample text."],
embedding = "amazon.titan-embed-text-v1")