[fpc-pascal] Reopen issue 20500: TSQLParser cant Parse Statements containing "as"

[Reinier Olislagers]

The issue reporter gave this example:
select ORDERNO as OrderNo from ORDERS as Orders;
It does parse AS, but only for a field.

Michael Van Canneyt replied:
TSQLParser implements SQL syntax as used in Firebird, and firebird does
not allow AS for a tablename, just append the alias.

The correct syntax would be:

select ORDERNO as OrderNo from ORDERS Orders;

However:
On my Firebird 2.5, this works perfectly (in FlameRobin and SQLWorkBench/J):
select * from rdb$relations as tables;

Would it make sense to reopen this bug?

Thanks,
Reinier