Amending select * from table alias

[trueqbit]

You made select * from table alias work to some extent with PR #952 (addressing issue #945), by doing the column_result_t handling right.

In order to make select * from table alias fully functional, the table name collector and column names getter should be amended as well.

• select(asterisk<als_a>()) possible w/o explicit from<als_a>(); see table name collector.
• always include alias name in column specifier, i.e. a.* instead of *; see column names getter.
• storage_t::dump() now serializes with context.skip_table_names = false just like storage_t::prepare_impl() see storage_t::dump()

Question: wouldn't it be safer that statement_serializator<alias_column_t<>> always qualifies the column with the table name (as if by seralizing with context.skip_table_names = false) since it is an aliased column?