Schema Synchronization

Tutorial: How to Synchronize Database Schemas

Bytebase supports synchronizing a specified schema version of one source database to one or multiple target databases. You can use Schema Synchronization to:

• Propagate the schema changes from the one database to others.
• Revert the database schema to an old version.

The overall workflow:

1. Compare a source database schema with one or multiple target databases’ schema.
2. Generate the suggested DDL statements (e.g. ALTER TABLE) to transit the source database schema state to each of the target database schema.
3. Create an issue.
4. Deploy the DDL statements to the targeted databases.

Supported Objects

Object	MySQL	PostgreSQL	TiDB	Oracle	SQL Server
Schema	—	✅	—	✅	✅
Table	✅	✅	✅	✅	✅
Column	✅	✅	✅	✅	✅
Primary Key	✅	✅	✅	✅	✅
Foreign Key	✅	✅	✅	✅	✅
Index	✅ Regular, Unique, Fulltext, Spatial	✅ Including Expression & Partial	✅	✅ Regular, Unique, Bitmap, Function-based	✅ Clustered, Non-clustered
Check Constraint	✅ (8.0+)	✅	❌ (metadata sync limitation)	✅	✅
View	✅	✅	✅	✅	✅
Materialized View	—	✅	—	✅	❌
Generated/Computed Column	✅ STORED/VIRTUAL	✅ STORED	✅	✅ Virtual	✅ Computed
Identity/Auto Column	✅ AUTO_INCREMENT	✅ SERIAL/IDENTITY	✅ AUTO_RANDOM	✅ IDENTITY (12c+)	✅ IDENTITY
Partitioning	✅ KEY, HASH, RANGE, LIST	✅	✅	✅ RANGE, LIST, HASH, COMPOSITE	❌
Sequence	—	✅	—	✅	✅
Trigger	✅	✅	—	✅	✅
Function	✅	✅	—	✅	✅
Procedure	✅	✅	—	✅	✅
Package	—	—	—	✅	—
Custom Type	—	✅ Enum only	—	✅	✅
Extension	—	✅	—	—	—
Comments	✅	✅	✅	✅	✅

How to use

Step 1 - Go to the Sync Schema page

Click the Database > Sync Schema button in the left navigation bar.

Step 2 - Select source schema

You need to select the project and source database schema version that you want to synchronize.

Step 3 - Select target databases

Select the target databases that will be synchronized with the chosen schema version in the previous step.

After you have selected a target database, Bytebase will show a schema diff between the two databases and generate the DDL statements. And you can further edit the generated content.

Step 4 - Preview issue

With the generated DDL statements, you can preview and create an Edit Schema issue. This kicks off the change workflow for the applied database.