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

Diff & merge table data

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

to open Object list tab with tables. Note that rows highlight here is related only to column definition changes (column names, types, etc) and not related to data changes. Then 2click 'Compare data' for the required table:

to open Data diff tab with result. Here you can 3apply filter to show only changed and/or new records:

To merge data changes to the other side you need to 4select required records, if needed 5select required columns, 6click Merge, and then click 7'Run' in the opened merge confirmation dialog to apply changes: