KS DB Merge Tools
for Microsoft Access
aka AccdbMerge
for SQL Server
aka MssqlMerge
for MySQL
and MariaDB
for SQLite

Diff & merge table data

1Click 'Load file' on the left panel:

2Select your file and click 3'Open':

Wait for progress 4and then repeat the same for the right panel 5:

Wait a bit more and 6click on total or changed count for Tables

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 7click 'Compare data' for the required table:

to open Data diff tab with result. Here you can 8apply filter to show only changed and/or new records:

To merge data changes to the other side you need to 9select required records, if needed 10select required columns and 11click Merge: