How to Migrate from Redshift to ParadeDB in PostgreSQL

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How do I migrate data from Amazon Redshift to ParadeDB?

Move Redshift tables to ParadeDB fast with SQL-compatible tools and minimal downtime.

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Description

Example H2

Example H3

Why migrate from Redshift to ParadeDB?

Teams switch to ParadeDB for lower costs, open-source control, and PostgreSQL-compatible features that simplify analytics pipelines.

What is the simplest migration workflow?

Dump Redshift data to Amazon S3, spin up ParadeDB, then COPY each table from S3 into ParadeDB using parallel workers for speed.

Which prerequisites must be in place?

Confirm Redshift UNLOAD permissions to S3, create matching schemas in ParadeDB, and configure the aws_s3 extension or give ParadeDB IAM access.

How do I create identical tables in ParadeDB?

Run CREATE TABLE … LIKE redshift_schema.table INCLUDING DEFAULTS INCLUDING IDENTITY to mirror structures, adjusting Redshift-only data types.

How to bulk-load data from S3 into ParadeDB?

Use COPY … FROM PROGRAM 'aws s3 cp s3://bucket/file.gz -' with FORMAT csv or PARQUET for columnar speed. Enable parallel workers to accelerate large tables.

How to migrate incremental changes?

After the full load, enable wal2json output plugin in ParadeDB and stream Redshift changes via CREATE PUBLICATION & logical replication for near-zero downtime cutovers.

Can I automate everything with the Parade CLI?

Yes. The parade migrate redshift command orchestrates schema creation, S3 UNLOAD, and ParadeDB COPY automatically.

What post-migration checks are critical?

Validate row counts, sample aggregates, and foreign-key constraints. Update your application connection string to ParadeDB and monitor query latency.

Best practices for production migrations?

Use identical data types, compress UNLOAD files, load largest tables first, and rehearse in staging. Schedule a brief read-only window for the final delta sync.

Example: migrate Customers and Orders

The queries below unload two tables to S3, recreate them in ParadeDB, and copy the data.

Why How to Migrate from Redshift to ParadeDB in PostgreSQL is important

How to Migrate from Redshift to ParadeDB in PostgreSQL Example Usage


-- Verify row counts after copy
SELECT 'Customers' AS table, COUNT(*) AS rows FROM Customers
UNION ALL
SELECT 'Orders', COUNT(*) FROM Orders;

How to Migrate from Redshift to ParadeDB in PostgreSQL Syntax


-- 1) In Redshift
UNLOAD ('SELECT * FROM Customers')
TO 's3://ecom-migration/Customers_'
CREDENTIALS 'aws_access_key_id=…;aws_secret_access_key=…'
FORMAT PARQUET;

UNLOAD ('SELECT * FROM Orders')
TO 's3://ecom-migration/Orders_'
CREDENTIALS 'aws_access_key_id=…;aws_secret_access_key=…'
FORMAT PARQUET;

-- 2) In ParadeDB (PostgreSQL 15)
CREATE EXTENSION IF NOT EXISTS aws_s3 CASCADE;

CREATE TABLE Customers (
  id          BIGINT PRIMARY KEY,
  name        TEXT,
  email       TEXT,
  created_at  TIMESTAMPTZ
);

CREATE TABLE Orders (
  id            BIGINT PRIMARY KEY,
  customer_id   BIGINT REFERENCES Customers(id),
  order_date    DATE,
  total_amount  NUMERIC(12,2)
);

-- 3) Bulk load
COPY Customers FROM PROGRAM '
  aws s3 cp s3://ecom-migration/Customers_000.parquet -'
  (FORMAT 'parquet');

COPY Orders FROM PROGRAM '
  aws s3 cp s3://ecom-migration/Orders_000.parquet -'
  (FORMAT 'parquet');

Common Mistakes

Skipping data-type review causes COPY failures. Redshift SUPER or GEOMETRY types lack ParadeDB equivalents. Cast or split these columns before UNLOAD.
Loading data without disabling foreign-keys slows COPY dramatically. Temporarily <code>ALTER TABLE … DISABLE TRIGGER ALL</code>, load, then re-enable.