I really dislike ambiguous column names across tables in a database. Use the
convention [tablename]_id for each id so every column name is self
describing. That way you can:
select * from providers inner join provider_types using(provider_type_id);
No need for table aliases, column aliases and no ambiguity.
Kenneth Tilton-2 wrote
> Is there any way on an arbitrary query to determine column names qualified
> by table aliases?
You could use a query like this to get a list of fully qualified column
names:
SELECT pg_tables.tablename||'.'||columns.column_name as columnname
FROM pg_tables,information_schema.columns columns
WHERE pg_tables.tablename=columns.table_name AND
pg_tables.schemaname='public'
ORDER by pg_tables.tablename;
you can amend that query to only look for columns of certain types, tie to
primary keys of tables or indexes. PostgreSQL is really rather helpful in
that regard.
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