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Prerequisites

  • Access to Supabase Dashboard
  • Xata account and project setup with a running main branch

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Install and configure the Xata CLI

Install the Xata CLI: 
curl -fsSL https://xata.io/install.sh | bash
Authenticate with your Xata account: 
xata auth login

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Find the Supabase connection string

Supabase connection strings typically look like this: 
postgresql://postgres:[YOUR_PASSWORD]@db.hostnameid.supabase.co:5432/postgres
To find yours, follow these steps:
  1. Go to Supabase Dashboard → Your Project
  2. Click “Connect” to bring up the “Connect to your project”
  3. Copy the connection string
  4. The password is not shown in the Supabase dashboard for security reasons. You can copy it from you records, or you can reset it if you have to.

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Initialize Xata project

Go to a local folder that you want to save the Xata configuration to and initialize it like this: 
xata init
Select your organization and project you want to use. For the database name you can either choose a new one (e.g xata) or use the same that you have in Supabase. If the database doesn’t exist, it will be created. In case you need to redo this step, you can reset the configuration by deleting the .xata/project.json file and running xata init again.

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Start the migration

Begin the data transfer: 
PGSTREAM_POSTGRES_SNAPSHOT_TABLES='public.*' xata clone start --validation-mode relaxed --source-url '<<supabase-connection-string>>'
Adjust the PGSTREAM_POSTGRES_SNAPSHOT_TABLES env variable with the schema names you want to transfer. It is needed here to avoid copying Supabase specific schemas like storage and realtime. Depending on how large the source database is, this step might take a while. A progress bar will show you the progress in the CLI.

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Verification

After migration, verify your data:
  1. Connect to Xata Branch: 
    psql `xata branch url`
  2. Check Data Integrity: 
    -- List tables
\dt

-- Compare row counts
SELECT COUNT(*) FROM your_table;

-- Check sample data
SELECT * FROM your_table LIMIT 10;