The 1.51 version of Multi-DB Querier is provided as a free download on our website. The software relates to Development Tools. This program is an intellectual property of Vitaliy Levchenko.
From the developer:
Database SQL tool, which allows running the same SQL queries on multiple databases with similar structure at once. Can be used also for a single database as query and export tool.
If running query returns resulting table, it can be exported to file of specified format. The tables from different databases can be either consolidated in one file or the result for each database can be exported to separate file.
You may want to check out more software, such as Datanamic MultiRun MultiDB, Datanamic SchemaDiff MultiDB or Active Query Builder.NET Edition, which might be related to Multi-DB Querier.