ImportUtil of Jackcess 2.2.2 should be changed in line 72:
current:
ColumnBuilder column = new ColumnBuilder(md.getColumnName(i))
.escapeName();
bugfix:
ColumnBuilder column = new ColumnBuilder(md.getColumnLabel(i))
.escapeName();
This change whould not ingnores the "as-clause" of a SQL-Statement in the ResultSet.
Fixed in trunk, will be in the 2.2.3 release.