A5:SQL Mk-2 vs AQT

Supports two-way Entity Relationship diagrams.

Support for Excel input and output.

Can be made portable by simply creating a folder "Portable" in the app folder.

A visual data explorer to view your SQL result set and easily total, sort, format, and group it (grouping is done by dragging columns to the header and groups can easily be collapsed/expanded and show column subtotals). You can also freeze columns on the left to for easy viewing of wide result sets, copy any row or rows to excel or other tool including column headings and get totals by highlighting adjacent columns.

A point-and-click data loader that generates your create table statement when creating a new table and includes the ability to add column expressions to alter/clean your source data during the load.

A robust visual query builder that has the ability to easily create SQL including complex sub-queries, supports with clauses and can save your table relationships for re-use.