PostgreSQL to Snowflake Migration
Scale your PostgreSQL analytics workloads with Snowflake's cloud-native architecture and near-unlimited concurrency.
Why Migrate from PostgreSQL to Snowflake?
No More VACUUM
Forget about VACUUM, ANALYZE, and bloat management. Snowflake handles it all automatically.
Instant Elasticity
Scale from 1 to 1000+ nodes in seconds. No replication lag, no connection limits.
Semi-Structured Data
Native support for JSON, Avro, Parquet. Query nested data without ETL.
Multi-Cloud
Run on AWS, Azure, or GCP. Replicate data across clouds for disaster recovery.
Data Type Mappings
| PostgreSQL Type | Snowflake Type | Notes |
|---|---|---|
| INTEGER, BIGINT | NUMBER | Direct mapping |
| VARCHAR, TEXT | VARCHAR | Up to 16MB |
| TIMESTAMP, TIMESTAMPTZ | TIMESTAMP_TZ | Timezone preserved |
| NUMERIC, DECIMAL | NUMBER(p,s) | Full precision |
| BOOLEAN | BOOLEAN | Direct mapping |
| JSONB, JSON | VARIANT | Full JSON support |
| UUID | VARCHAR(36) | Stored as string |
| ARRAY | ARRAY | Native array type |
Migration Process
Schema Discovery
Analyze schemas, tables, views, and custom types in your PostgreSQL database.
Compatibility Check
Identify PL/pgSQL functions, triggers, and extensions that need attention.
Schema Conversion
Generate optimized Snowflake schemas with appropriate clustering and partitioning.
Parallel Data Load
Use COPY command with staged files for maximum throughput. Track progress in real-time.
Data Validation
Compare row counts, run checksum queries, and validate sample records.
PostgreSQL-Specific Considerations
- Custom Types: PostgreSQL custom types and domains are converted to their base types with documentation.
- Stored Procedures: PL/pgSQL functions need manual conversion to Snowflake Scripting or JavaScript UDFs.
- Extensions: PostGIS, pg_trgm, and other extensions require alternative approaches in Snowflake.
- Sequences: PostgreSQL sequences are mapped to Snowflake sequences with AUTOINCREMENT columns.
Ready to Migrate PostgreSQL to Snowflake?
Start with a free schema analysis and get a detailed migration plan.
Start Free Analysis