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How to load CSV data

A comma-separated values (CSV) file is a delimited text file that uses a comma to separate values. Each line of the file is a data record. Each record consists of one or more fields, separated by commas.

Load CSV data with a single row per document.

Setup​

npm install d3-dsv@2

Usage, extracting all columns​

Example CSV file:

id,text
1,This is a sentence.
2,This is another sentence.

Example code:

import { CSVLoader } from "@langchain/community/document_loaders/fs/csv";

const loader = new CSVLoader("src/document_loaders/example_data/example.csv");

const docs = await loader.load();
/*
[
Document {
"metadata": {
"line": 1,
"source": "src/document_loaders/example_data/example.csv",
},
"pageContent": "id: 1
text: This is a sentence.",
},
Document {
"metadata": {
"line": 2,
"source": "src/document_loaders/example_data/example.csv",
},
"pageContent": "id: 2
text: This is another sentence.",
},
]
*/

Usage, extracting a single column​

Example CSV file:

id,text
1,This is a sentence.
2,This is another sentence.

Example code:

import { CSVLoader } from "@langchain/community/document_loaders/fs/csv";

const loader = new CSVLoader(
"src/document_loaders/example_data/example.csv",
"text"
);

const docs = await loader.load();
/*
[
Document {
"metadata": {
"line": 1,
"source": "src/document_loaders/example_data/example.csv",
},
"pageContent": "This is a sentence.",
},
Document {
"metadata": {
"line": 2,
"source": "src/document_loaders/example_data/example.csv",
},
"pageContent": "This is another sentence.",
},
]
*/

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