Qt: viewing data from tables with foreign key columns pointing to multiple other tables

I have a table Thingsies, with columns id, data1, otherTableId, otherTableRowId. I need the last 开发者_JAVA百科two columns instead of just a foreign key column because depending on the Thingy the type of information I want there is different.

otherTableId references an id in the table OtherTables, which itself has columns called id and tableName. These tableNames are the names of other tables, like OtherTable1, OtherTable2.

The column otherTableRowId in Thingies references an id in the OtherTable given by otherTableId. The OtherTables themselves have more data in them. There's a one-to-one correspondence between Thingies and entries in one of the OtherTables. So the number of rows in Thingies is the total number of rows in all the OtherTables. (Is this bad design?)

I want to display Thingies in a QTableView that has columns for id, data1, and data2, where data2 is generated programatically from otherTableId and otherTableRowId. How should I proceed?

Thanks.

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I think I've solved this. I'm using a QSqlQueryModel whose query is a union of a bunch of select statements, one for each OtherTable. Each select statement has to somehow merge (e.g., concatenate) the data unique to each OtherTable using a special expression anyway, so there's no use for me at least for the OtherTables table.