SSC-FDM-PG0005

UNLOGGED Table is not supported in Snowflake; data written may have different performance.

Important Notice: Migration of Documentation Website

Please be advised that our documentation website is currently undergoing a migration to a new platform. To ensure you have access to the most up-to-date information, we kindly request that you visit our new documentation website located at:

Official Snowflake Snowconvert Documentation

For any immediate assistance or if you encounter any issues, please contact our support team at [email protected].

Thank you for your understanding.

Description

PostgreSQL's UNLOGGED tables offer a significant speed advantage by skipping write-ahead logging (WAL). However, their data isn't replicated to mirror instances. Snowflake doesn't support this functionality, so the UNLOGGED clause will be commented out.

Code Example

Input Code:

PostgreSQL

IN -> PostgreSQL_01.sql

CREATE UNLOGGED TABLE TABLE1 (
   COL1 integer 
);

Output Code:

Snowflake

OUT -> PostgreSQL_01.sql

CREATE
--       --** SSC-FDM-PG0005 - UNLOGGED TABLE IS NOT SUPPORTED IN SNOWFLAKE, DATA WRITTEN MAY HAVE DIFFERENT PERFORMANCE. **
--       UNLOGGED
                TABLE TABLE1 (
COL1 integer
)
COMMENT = '{ "origin": "sf_sc", "name": "snowconvert", "version": {  "major": 0,  "minor": 0,  "patch": "0" }, "attributes": {  "component": "greenplum",  "convertedOn": "04/21/2025",  "domain": "test" }}';

Recommendations

• If you need more support, you can email us at [email protected]