Related to the new possibility to add virtual columns in mysql 5.7 for JSON usage its cause bug during heidisql dump (in short the virtual columns must not be exported). this is was fixed with the classic mysqldump command for mysql > 5.7.9 versions.
Ads were blocked - no problem. But keep in mind that developing HeidiSQL, user support and hosting takes time and money. You may want to send a donation instead.
MYSQL 5.7 DUMP
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