Is it possible to multi select tables in one database?

No, not possible with DB Replacer. You can only search and replace in 1 table at a time.

To do replaces in multiple tables you will have to repeat the replace process for each table.

Another method is to execute your own custom sql command on your database directly, via phpMyAdmin for instance.

How can I replace empty or NULL values

You can match empty, NULL or 0000-00-00 date values by simply placing NULL in the search area.

How can I replace the entire value

You can match the entire value of a field by placing a single asterisk * in the search area.

Where can I find more information on Regular Expressions?

For more info on Regular Expressions:
For testing them:,,