Create table with identity doesn't support minvalue, maxvalue, cycle

[Thomas Jones-Low]

CREATE TABLE t (c1 integer GENERATED BY DEFAULT AS IDENTITY (MAXVALUE 12 MINVALUE 1 CYCLE)

There are three issues in the processing of GENERATED ... IDENTITY that need to be fixed in the parser:

1) The requirement of the comma between the STARTS WITH and INCREMENT BY clauses which isn't in the standard.

2) The non-support of the MINVALUE, MAXVALUE, and CYCLE clauses.

3) The internal processing of the GENERATED ... IDENTITY ends up setting special fields on the ColumnDefinitionNode. It should generate a CreateSequenceNode and attach it.

[Mike McMahon (mmcm)]

Also the NO variants of 2).