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Connect Clickhouse and Supabase NDJSON file in our serverless environment

Use this template to Read rows from Clickhouse table using them to create NDJSON file entries in Supabase bucket.


Read rows from Clickhouse table

Used integrations:
class ClickhouseSourceSelect {
async init() {
// TODO: Create your clickhouse credential
// More info at
this.clickhouse = yepcode.integration.clickhouse(

async fetch(publish, done) {
// TODO: customize your sql query
const sql = "SELECT * FROM your_table_name";

const resultSet = await this.clickhouse.query({
query: sql,
format: "CSV",
const stream =;
stream.on("data", (rows) => {
stream.on("end", done);

async close() {
await this.clickhouse.close();

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Create NDJSON file entries in Supabase bucket

Used integrations:
class SupabaseTargetUploadNdjson {
async init() {
// TODO: Create your supabase credential
// More info at
this.supabase = yepcode.integration.supabase(

this.items = [];

async consume(item) {

async close() {
try {
// Transform items to ndjson entries
const ndjsonFileContent = ndjson.stringify(this.items);
// TODO: adapt bucket and files management
// You may check the full API documentation at:
// Check docs at
const {
} = await
.upload(`your-new-file.ndjson`, ndjsonFileContent, {
contentType: "text/ndjson",

if (error) {
throw error;
} catch (error) {
console.error(`Error ending upload`, error);

Other combinations

View recipes


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