KS DB Merge Tools
 
for MS Access
aka AccdbMerge
for SQL Server
aka MssqlMerge
for MySQL
and MariaDB
for SQLite
 
for PostgreSQL
beta

Compare and synchronize table definition

Open databases (see Project changes summary use case) and 1click on Table definitions:

You can also click on New or Changed counts to see only new or changed tables respectively. Review changes in the opened Object list tab:

New tables can be merged right from here: 2select required tables and 3click merge button. This will open a merge confirmation dialog, click 4OK to apply changes:

To merge changed table definition click on table name to open Table structure diff tab:

Review changes, 5select items you want to merge, click 6Merge and wait for a progress completion.

Please note that these table definition changes do not affect data. So for example if you merge new column then it is populated with NULL or its default values. See Diff & merge table data use case to sync data if needed.